A Pulley with a Radius of 3

question 80

Multiple Choice

A pulley with a radius of 3.0 cm and a rotational inertia of 4.5 *10^-3 kg . m² is suspended from the ceiling. A rope passes over it with a 2.0-kg block attached to one end and a 4.0-kg block attached to the other. The rope does not slip on the pulley. When the velocity of the heavier block is 2.0 m/s the total kinetic energy of the pulley and blocks is:

• A) 2.0 J
• B) 4.0 J
• C) 14 J
• D) 22 J
• E) 28 J

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