The elevator moves at constant speed. Constant speed, so a = O and net scale = mg = (75.0 m/s2) = 735 N It slows at 2.00 m/s2 while moving upward. Slowing while moving upward, so a = —2.00 m/s2 net scale = ma + mg = m(a + g) = (75.0 + 9.80 m/s2) = 585 N net scale = ma + mg 75 k )( kg)(a) m/s2) 7 Physics: Principles and Problems Solutions Manual
12. A 1500-kg elevator moves upward with constant speed through a vertical distance of 25 m. How much work was done by the tension in the cable? A) 990 J B) 8100 J C) 140 000 J D) 370 000 J E) 430 000 J 13. A 12-kg crate is pushed up an incline from point A to point B as shown in the figure.
Integrated Concepts An elevator filled with passengers has a mass of 1700 kg. (a) The elevator accelerates upward from rest at a rate of \$1.20 \textrm{ m/s}^2\$ for 1.50 s. Calculate the tension in the cable supporting the elevator. (b) The elevator continues upward at constant velocity for 8.50 s. What is the tension in the cable during this time?
Suppose the elevator accelerates upward at 3.0 m/s2. a) If the scale reads 1,024N, what is the man’s mass? b) If the elevator has a mass of 1000 kg, and if the scale has a mass of 10 kg, find the tension in the elevator’s cable (you know, the one that is pulling the elevator upward) Answers 0) Answers in class.
(2 pts) A box is pushed and slides at a constant speed on a rough horizontal surface. The FBD is shown below. P is the push force, F the friction force, W the weight, and N the normal force. Which forces are 3rd law partner forces? 10.2 kg 26.3 kg 38.7 kg 100 kg 10 sin(8) lb 10 cos(8) lb 10 lb
The existence of escape velocity is a consequence of conservation of energy and an energy field of finite depth. For an object with a given total energy, which is moving subject to conservative forces (such as a static gravity field) it is only possible for the object to reach combinations of locations and speeds which have that total energy; and places which have a higher potential energy ...
15. A 0.50-kg object moves in a horizontal circular track with a radius of 2.5m. An external force of 3.0N, always tangent to the track, causes the object to speed up as it goes around. The work done by the external force as the mass makes one revolution is: A. 24J B. 47J C. 59J D. 94J E. 120J ans: B 16.
32. A person of mass 40 kg stands on a bathroom scale. What is the normal force (the reading on the scale)? 33. How would the reading on the scale in Problem 32 change if the person was standing in an elevator on the scale and a) the elevator was moving up with a con-stant speed? b) the elevator was accelerating upwards and moving upwards? a constant speed by a rope pulling horizontally on it. Friction is not negligible. I A skydiver has his parachute open and is floating downward through the air at a constant speed. 23. I I Two children fight over a 200 g stuffed bear. The—254boy pulls to the right with a 15 N force and the 20-kg—šxl pulls to the left with a 17 N force.
3. An elevator is moving upward with constant acceleration. The dashed curve shows the position y of the ceiling of the elevator as a function of time t. At the instant indicated by the dot, a bolt breaks loose and drops from the ceiling. Which curve best represents the position of the bolt as a function of time? t y A B C E D (1) B (2) A (3) C ...
32. A person of mass 40 kg stands on a bathroom scale. What is the normal force (the reading on the scale)? 33. How would the reading on the scale in Problem 32 change if the person was standing in an elevator on the scale and a) the elevator was moving up with a con-stant speed? b) the elevator was accelerating upwards and moving upwards?
What Does the Bathroom Scale Read in an Elevator? shows a 75.0-kg man (weight of about 165 lb.) standing on a bathroom scale in an elevator. Calculate the scale reading: (a) if the elevator accelerates upward at a rate of . and (b) if the elevator moves upward at a constant speed of 1 m/s.
science. physics. physics questions and answers. 5. A) A 1500-kg Elevator Moves Upward With Constant Speed Through A Vertical Distance Of 25 ... Question: 5. A) A 1500-kg Elevator Moves Upward With Constant Speed Through A Vertical Distance Of 25 M.
The elevator, (with you inside) begins to accelerate upward from rest at 2 m/s 2. Complete the FBD! Question 3: What will the scale read now? Question 4: If you let go of the apple now, what does it do? Part C: The Elevator Moves Up With Constant Velocity The elevator (and you) accelerated for 5 seconds, so it is moving upward with a velocity ...
Jul 14, 2015 · The fastest cable-type elevators, in the Taipei 101 tower, move at 60 km/hr. A full synchronous orbit elevator, with a counterweight well above 35,800 km altitude, might be 60,000 km long. Therefore the elevator ride would take 1000 hours (41 days 16 hours), which is clearly too long for practical use.

18. A 90-kg man stands in an elevator that is moving up at a constant speed of 5.0 m/s. The force exerted by him on the floor is about: ￻ ￹ A) zero ￻ ￹ B) 90 N ￻ ￹ C) 880 N ￻ ￹ D) 450 N ￻ ￹ E) 49 N ￻ ￹ 19. A 90-kg man stands in an elevator that has a downward acceleration of 1.4 m/s2. The force exerted by him on the ... Elevator Power. [ 7 Answers ] A 550 kg elevator starts from rest. It moves upward for 5.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (a) What is the average power of the elevator motor during this period? W (b) How does this power compare with the motor power when the elevator moves at its...

6. An electric motor develops 89 kW of power as it lifts a loaded elevator 15.5 m in 42 s. How much force does the motor exert? 7. A machine does 4500 J of work in 60 s. If the motor is supplied with 120 W of electric power to run, how efficient is it? 8. A comet with a mass of 7.85 x 1011 kg strikes the Earth at a speed of 25.0 km/s. a.

I want to calculate the motor rating for an electric-bicycle having a laden weight of 150 kg and maximum speed of 25 km/h. The vehicle has to be accelerate from 0 to 25 km/h in 9 to 10 seconds.

It discusses how to calculate the apparent weight of a person when the elevator is at rest, moving upward with constant speed, downward with constant velocity, accelerating upward or downward.
Dec 10, 2012 · An elevator cab has a mass of 4500 kg and can carry a maximum load of 1800 kg. If the cab is moving upward at full load at 3.80 m/s, what power is required of the force moving the cab to maintain that speed?
What is the speed of the bolt just as it hits the elevator floor (b) according to an observer in the elevator? (c) According to an observer standing on one of the floor This is part of a here. Okay, so we're gonna let why be the upward direction and why zero b the initial point of the floor of the elevator.
An elevator is being lifted at a constant speed by a steel cable attached to an electric motor. Which statement is correct? B. The cable does positive work on the elevator, and the elevator does negative work on the cable. C. The cable does negative work on the elevator, and the elevator does positive work on the cable. D.
moving with a constant speed v. For example, a car might be traveling To maintain a constant speed, the engine must exert a constant force F equal to the combined effects of friction, gravity The elevator exerts an upward normal force on the package, and hence does positive work on it.
A cable exerts a constant upward tension of magnitude 1.82 x 10 of 1.50 m. HINT N on a 1.60 x 103 kg elevator as it rises through a vertical distance (a) (b) Find the work done by the tension force on the elevator (in J). 27300 J Find the work done by the force of gravity on the elevator (in J). 23500 J Solution or Explanation (a) (b)
An elevator, as illustrated, is being lifted up an elevator shaft by a steel cable. When the elevator is moving up the shaft at a constant velocity; (A) the upward force on the elevator by the cable is greater than the downward force of gravity.
Three seconds later, the elevator is still moving upward, but its speed has been reduced to 5.0 m/s. What is the average acceleration of the elevator A 72.2-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of...
I want to calculate the motor rating for an electric-bicycle having a laden weight of 150 kg and maximum speed of 25 km/h. The vehicle has to be accelerate from 0 to 25 km/h in 9 to 10 seconds.
24. A 1500-kg elevator moves upward with constant speed through a vertical distance of 25 m. How much work was done by the tension in the elevator cable? (a) 990 J (c) 140 000 J (e) 430 000 J (b) 8100 J (d) 370 000 J
38. A 1500 kg elevator moves up and down on a cable. Calculate the tension in the cable for the following cases: a. The elevator moves at constant speed upward b. The elevator moves at constant speed downward c. The elevator accelerates upward at a constant rate of 1.2 m/s d. The elevator accelerates downward at a constant rate of 1.2 m/s 2 2 39.
What will a spring scale read for the weight of a 58.0-kg woman in an elevator that moves (a) upward with constant speed 5.0 m/s, (b) downward with constant speed 5.0 m/s, (c) with an upward acceleration 0.23 g, (d) with a downward acceleration 0.23 g, and (e) in free fall?
21. A 2.00 kg pendulum hangs in an elevator. Calculate the tension in the string supporting the pendulum if the elevator moves: a. with zero velocity b. downward at a constant velocity of 2.5 m/s c. upward at a constant velocity of 2.5 m/s d. downward at a constant acceleration of 2.00 m/s2 e. upward at a constant acceleration of 2.00 m/s2 22.
71) A 1500 kg elevator moves upward with constant speed through a vertical distance of 25 m. Approximately how much work was done by the tension in the cable? (A) 990 J (B) 8,100 J (C) 140,000 J (D) 375,000 J (E) 430,000 J 72) A student hangs a known weight w from a hanging spring such that it displaces the spring a distance X
got_milk_biotch. asked in Science & Mathematics Physics · 1 decade ago. A 1500-kg elevator moves upward with constant speed through a vertical distance of 25 m. How much work was don? of 25 m.
Oct 16, 2016 · (a) What upwards force does the courier apply to the package when carrying it horizontally at a constant velocity of 2m/s into the building? (b) The . Physics. A 500 kg elevator starts from rest. It moves upward for 4.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s.
Part C: The Elevator Moves Up With Constant Velocity. The elevator (and you) accelerated for 5 seconds, so it is moving upward with a velocity of 10 m/s. Since the elevator is moving with constant velocity, your acceleration is (5b) ____ m/s2.
12. A 1500-kg elevator moves upward with constant speed through a vertical distance of 25 m. How much work was done by the tension in the cable? A) 990 J B) 8100 J C) 140 000 J D) 370 000 J E) 430 000 J 13. A 12-kg crate is pushed up an incline from point A to point B as shown in the figure.
(4 ed) 13.3 A car with bad shock absorbers bounces up and down with a period of 1.5 s after hitting a bump. The car has a mass of 1500 kg and is supported by four springs of equal force constant k. Determine a value for k.
Oct 22, 2007 · Once the elevator is falling more than half as fast as the speed you get by jumping from rest, jumping reduces your energy, and will soften the fall. If you tried jumping just as soon as the elevator started to fall, you’d actually end up falling from a greater height, and hit harder.
A tractor travels at constant speed of 6m/s. Find the power supplied by the engine if it can supply a maximum force of 467 kN. A 7.35 kW lathe can move an iron block at a constant speed by applying a force of 5.56 kN. Find the speed of the block. General Problems. A 255 N force is applied to a 46 kg box that is located on a flat horizontal surface.
46 · A 2000-kg car moving at an initial speed of 25 m/s along a horizontal road skids to a stop in 60 m run; neglect air resistance. Assume the hill is 225 m high with a constant slope of 30o with the If the elevator in Problem 75 is counter-. balanced with a mass of 1500 kg, what is the power provided...
moving with a constant speed v. For example, a car might be traveling To maintain a constant speed, the engine must exert a constant force F equal to the combined effects of friction, gravity The elevator exerts an upward normal force on the package, and hence does positive work on it.
(a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done on the lift by the gravitational force in this process? (c) What is the total work done on the lift?
Elevator Power. [ 7 Answers ] A 550 kg elevator starts from rest. It moves upward for 5.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (a) What is the average power of the elevator motor during this period? W (b) How does this power compare with the motor power when the elevator moves at its...
6.1) A 500 kg elevator is pulled upward with a constant force of 5500 N for a distance of 50.0 m. What is the net work done on the elevator? 6.2) A 30 N box is pulled 6.0 m up a 37° inclined plane. What is the work done by gravity on the box?
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Jun 24, 2011 · A 601-kg elevator starts from rest and moves upward for 4.50 s with constant acceleration until it reaches its cruising speed, 1.79 m/s. (a) What is the average power of the elevator motor during this period? W (b) How does this amount of power compare with its power during an upright trip with constant speed?
*8 (p.174 Ex.57) An elevator cable breaks when a 755-kg elevator is 22.5m above the top of a huge spring (k = 8.00 x 10 4 N/m) at the bottom of the shaft. Calculate ( a ) the work done by gravity on the elevator before it hits the spring; ( b ) the speed of the elevator just before striking the spring; ( c ) the amount the spring compresses ... An elevator is moving upwards at a constant velocity of 5 m/s. what is the net acceleration the elevator. An elevator moving down passes its neighbor, an elevator moving up. Their speed relative to one another. You are conducting an experiment inside an elevator that can move in a...
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Jun 21, 2011 · In this case, when the elevator is standing still, the cable tension is given by: A = 9.8 m/s^2 (acceleration due to gravity being counteracted by the cable) T = 2010*9.8 = 19698 kg*m/s^2 = 19698 newtons. When accelerating upward: A = 9.8 m/s^2 + 1.2m/s^2 = 11m/s^2. T = 2010 * 11 = 22110 kg*m/s^2 = 22110 newtons ANSWER
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An elevator, fully loaded with passengers, has a mass of 4000 kg. What power must be delivered by the motor (tension in the cable) so that the elevator moves up at constant speed of 2.0 m/s? A) 78.4 kW B) 18.4 kW C) 71.3 W D) 80.0 kW E) 98.2 kW Ans: Power 4000 9.8 2 78.4 kW u u Tv mgv Q10. A student lifted his bag to a height h. The work done ... Knowing that when the elevator moves downward with an acceleration of 1.2 A constant force P is applied to a piston and rod of total mass m to make them move in a cylinder filled with oil. Determine the maximum theoretical speed that a 1350 kg automobile starting from rest can reach after traveling...kg? 5.1.2 What is the maximum speed that goods elevators can make in m/min? (4) 5.2 The loaded cage of a goods elevator has a mass of 1,45 ton. The rope passes over a drum with a mass of 0,25 ton, a radius of gyration of 400 mm and a diameter of 900 mm. The cage and balance mass of 0,65 ton move in guides.
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Example Case 2: A person of mass 72.2 kg is in an elevator. Determine what the scale they are standing on would read in each of the circumstances: a. The elevator is moving up at a constant speed. b. The elevator is moving down at a constant speed. c. The elevator is accelerating up at 3.20 m/s2. d. The elevator is accelerating downward at 3.20 ... Ans. 2TKE = ½mv = ½(2.40 kg)(43.38 m/s)2 = 2258.19 J d. How much work would be needed to lift this ball back up to the top of the building at a constant speed? Ans. 2258.19 J. Energy is conserved. The amount of kinetic energy is the same as the amount of work to reset the ball to its original height. Sep 22, 2012 · Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s. The elevator takes 4.0 s to brake to a stop at the first floor. What is Zach's apparent weight before the elevator starts braking...
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Ans. 2TKE = ½mv = ½(2.40 kg)(43.38 m/s)2 = 2258.19 J d. How much work would be needed to lift this ball back up to the top of the building at a constant speed? Ans. 2258.19 J. Energy is conserved. The amount of kinetic energy is the same as the amount of work to reset the ball to its original height.
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kg? 5.1.2 What is the maximum speed that goods elevators can make in m/min? (4) 5.2 The loaded cage of a goods elevator has a mass of 1,45 ton. The rope passes over a drum with a mass of 0,25 ton, a radius of gyration of 400 mm and a diameter of 900 mm. The cage and balance mass of 0,65 ton move in guides. of length 1.2 km. The aircraft moves from . A. with initial speed 2 m s –1. It moves with constant acceleration and 20 s later it leaves the runway at . C . with speed 74 m s –1. Find (a) the acceleration of the aircraft, (2) (b) the distance . BC. (4) 2. Two small steel balls A and B have mass 0.6 kg and 0.2 kg respectively. They are moving
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18. An elevator, as illustrated, is being lifted up an elevator shaft by a steel cable. When the elevator is moving up the shaft at a constant velocity; (A) the upward force on the elevator by the cable is greater than the downward force of gravity. Oct 16, 2016 · (a) What upwards force does the courier apply to the package when carrying it horizontally at a constant velocity of 2m/s into the building? (b) The . Physics. A 500 kg elevator starts from rest. It moves upward for 4.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. An elevator, as illustrated, is being lifted up an elevator shaft by a steel cable. When the elevator is moving up the shaft at a constant velocity; (A) the upward force on the elevator by the cable is greater than the downward force of gravity.
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Part C: The Elevator Moves Up With Constant Velocity. The elevator (and you) accelerated for 5 seconds, so it is moving upward with a velocity of 10 m/s. Since the elevator is moving with constant velocity, your acceleration is (5b) ____ m/s2.
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How Much Work Was Done By The Tension In The Elevator Cable? How much work was done by the tension in the elevator cable? Please show all work. Thank you!acceleration of 1 m/s2 to a 1 kg mass there are other units, e.g. pounds (lb) we could use, ... ★ elevator accelerating up 26 ... box moving at constant speed
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The elevator moves at constant speed. Constant speed, so a = O and net scale = mg = (75.0 m/s2) = 735 N It slows at 2.00 m/s2 while moving upward. Slowing while moving upward, so a = —2.00 m/s2 net scale = ma + mg = m(a + g) = (75.0 + 9.80 m/s2) = 585 N net scale = ma + mg 75 k )( kg)(a) m/s2) 7 Physics: Principles and Problems Solutions Manual
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A 1500-kg car moving at 25 m/s hits an initially uncompressed horizontal spring with spring constant of 2.0 × 106 N/m. What is the maximum compression of the spring? A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine?Solved: A 1500-kg Elevator Moves Upward With Constant Spee... | Chegg.com. Answer to A 1500-kg elevator moves upward with constant speed through a vertical distance of 25m. How much work was done by the te... Skip Navigation.