A 67-kg woman in an elevator is accelerating downward at a rate of 1.8 m/s2. What...

A 67-kg woman in an elevator is accelerating downward at a rate of 1.8 m/s2. What is the magnitude of the force exerted by the elevator floor on the woman's feet?

A 51-kg woman in an elevator is accelerating downward at a rate of 1.9 m/s2. What is the magnitude of the gravitational force acting upon the woman?

Expert Solution

genius_generous answered 2 years ago

A 500 kg elevator accelerates upward at 1.9 m/s2 for 20 m, starting from rest. a)...

A 500 kg elevator accelerates upward at 1.9 m/s2 for 20 m, starting from rest. a) How much work does gravity do on the elevator? b) How much work does the tension in the elevator cable do on the elevator? c) What is the elevator’s kinetic energy after traveling 20 m?

A 70 kg person is parachuting and experiencing a downward acceleration of 1.9 m/s2. The mass...

A 70 kg person is parachuting and experiencing a downward acceleration of 1.9 m/s2. The mass of the parachute is 4.1 kg. (a) What is the upward force on the open parachute from the air? (b) What is the magnitude of the downward force on the parachute from the person?

An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s,...

An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the ?oor. Assume that the bolt does not experience air resistance. Calculate how long it takes for the bolt to hit the ?oor, how far it travels, and how fast it is going when it hits the ?oor of the elevator. Solve this problem in two reference frames, one ?xed with respect to...

A locomotive is accelerating at 1.6 m/s2 as it passes through a 30-m-wide crossing. After the...

A locomotive is accelerating at 1.6 m/s2 as it passes through a 30-m-wide crossing. After the locomotive leaves the crossing, how much time is required until its speed reaches 40?

1. In China, the fertility rate is 1.8 children per woman in childbearing age. What does...

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A person with mass m= 70 kg takes the elevator to the top of the Empire...

A person with mass m= 70 kg takes the elevator to the top of the Empire State Building at a height of 300 m. Assum the elevator takes 1 min to reach the top of the building (a) Find the work done on the person by gravity during the elevator ride? (b) Find the amount of work the normal force of the floor did on the person. (c) Find the average power of the force of gravity.

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An object with a mass of 4.15 kg undergoes an acceleration of 2.7 m/s2 for a...

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A 480 kg horse pulls a 260 kg cart with a constant acceleration of 0.800 m/s2....

A 480 kg horse pulls a 260 kg cart with a constant acceleration of 0.800 m/s2. Assume the only force acting on the horse comes from the cart pulling on it. (a)What force does the horse extert on the cart? ______ N (b)What force does the cart exert on the horse? _______N (c)What is the net force acting on the horse? ______N

2) An Elevator with a mass of 2500 Kg rests at a level 10 m above...

2) An Elevator with a mass of 2500 Kg rests at a level 10 m above the base of an elevator shaft. It is raised to 100 m above the base of shaft, where the cable holding it breaks. The elevator falls freely to the base of the shaft and strikes a strong spring. The spring is designed to bring the elevator to rest and to hold the elevator at the position of maximum spring compression. Assuming the entire process...

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