The figure shows a thin rod, of length L = 1.50 m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m = 11.0 kg is attached to the other end. The rod is pulled aside to angle 00 = 6.50° and released with initial velocity 10 = 0. As the ball descends to its lowest point, (a) how much work does the gravitational force do on it and (b) what is the change in the gravitational potential energy of the ball-Earth system? (c) If the gravitational potential energy is taken to be zero at the lowest point, what is its value just as the ball is released? % (a) Number (b) Number (c) Number Mi Units Units Units L m > >

The figure shows a thin rod, of length L = 1.50 m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m = 11.0 kg is attached to the other end. The rod is pulled aside to angle 00 = 6.50° and released with initial velocity 10 = 0. As the ball descends to its lowest point, (a) how much work does the gravitational force do on it and (b) what is the change in the gravitational potential energy of the ball-Earth system? (c) If the gravitational potential energy is taken to be zero at the lowest point, what is its value just as the ball is released? % (a) Number (b) Number (c) Number Mi Units Units Units L m > >

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 45P: A small block of mass m = 200 g is released from rest at point along the horizontal diameter on the...

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A small block of mass m = 200 g is released from rest at point along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 30.0 cm (Fig. P7.45). Calculate (a) the gravitational potential energy of the block-Earth system when the block is at point relative to point . (b) the kinetic energy of the block at point , (c) its speed at point , and (d) its kinetic energy and the potential energy when the block is at point . Figure P7.45 Problems 45 and 46.
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