A string is wrapped around a pulley with moment of inertia 0.35 kg-m2. The pulley rotates without friction about a fixed axis. The string is pulled to give a constant torque of 3.1 kg-m2/s?. If the pulley starts from rest, what is the instantaneous power, in W, being applied to the pulley after the string has been pulled for 2.8 s? O 77 O 69 O 35 O 25 O 38

Glencoe Physics: Principles and Problems, Student Edition
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ISBN:9780078807213
Author:Paul W. Zitzewitz
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Chapter8: Rotational Motion
Section8.2: Rotational Dynamics
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A string is wrapped around a pulley with moment of inertia 0.35 kg-m2. The pulley rotates without
friction about a fixed axis. The string is pulled to give a constant torque of 3.1 kg-m²/s². If the
pulley starts from rest, what is the instantaneous power, in W, being applied to the pulley after the
string has been pulled for 2.8 s?
O 77
69
O 35
O 25
38
Transcribed Image Text:A string is wrapped around a pulley with moment of inertia 0.35 kg-m2. The pulley rotates without friction about a fixed axis. The string is pulled to give a constant torque of 3.1 kg-m²/s². If the pulley starts from rest, what is the instantaneous power, in W, being applied to the pulley after the string has been pulled for 2.8 s? O 77 69 O 35 O 25 38
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