University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 10.31E
A 2.80-kg grinding wheel is in the form of a solid cylinder of radius 0.100 m. (a) What constant torque will bring it from rest to an angular speed of 1200rev/min in 2.5 s? (b) Through what angle has it turned during that time? (c) Use Eq. (10.21) to calculate the work done by the torque. (d) What is the grinding wheel’s kinetic energy when it is rotating at 1200rev/min? Compare your answer to the result in part (c).
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A 2.80 kg grinding wheel is in the form of a solid cylinder of radius 0.100 m.(a) What constant torque will bring it from rest to an angular speed of 1200 rev/min in 2.5 s?(b) Through what angle has it turned during that time?(c) Calculate the work done by the torque.(d) What is the grinding wheel’s kinetic energy when it is rotating at 1200 rev/min?(e) What is the average power supplied to the wheel?
A 2.80 kg grinding wheel is in the form of a solid cylinder of radius 0.100 m. (a) What constant torque will bring it from rest to an angular speed of 1200 rev/min in 2.5 s? (b) Through what angle has it turned during that time? (c) Use Eq. to calculate the work done by the torque. (d) What is the grinding wheel’s kinetic energy when it is rotating at 1200 rev/min ? Compare your answer to the result in part (c).
A bowling ball of mass 6.85 kg is rolling at 2.60 m/s along a level surface.
(a) Calculate the ball's translational kinetic energy.
(b) Calculate the ball's rotational kinetic energy.
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(c) Calculate the ball's total kinetic energy.
(d) How much work would have to be done on the ball to bring it to rest?
Chapter 10 Solutions
University Physics (14th Edition)
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