A wheel (radius -0.20 m) is mounted on a frictionless, horizontal axis. A light cord wrapped aroundthe wheel supports a 0.50-kg object, as shown in the figure. When released from rest the object fallswith a downward acceleration of 5.0 m/s2. What is the moment of inertia of the wheel?a. 0.023 kg m?b. 0.027kg mc. 0.016kg md. 0.019 kg m2e. 0.032 kg m'

Equation (2) gives the expression for the moment of inertia in terms of the torque. The torque is…

Answered: A wheel (radius -0.20 m) is mounted on…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 87A

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While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the leg is 3.75kg-m2 and its rotational kinetic energy is 175 J. (a) What is the angular velocity of the leg? (b) What is the velocity of tip of the punter's shoe if it is 1.05 m from the hip joint? (c) Explain how the football can be given a velocity greater than the tip of the shoe (necessary for a decent kick distance).
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Explain how you might use the apparatus described in Figure OQ10.7 to determine the moment of inertia of the wheel. Note: If the wheel does not have a uniform mass density, the moment of inertia is not necessarily equal to 12 MR2.

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