A Cinder Block of Mass M=4 $4.90 \mathrm {~m} / \mathrm { s } ^ { 2 }$

question 4

Multiple Choice

A cinder block of mass m=4.0 kg is hung from a nylon string that is wrapped around a frictionless pulley having the shape of a cylindrical shell, as shown in the figure. If the cinder block accelerates downward at $4.90 \mathrm {~m} / \mathrm { s } ^ { 2 }$ when it is released, what is the mass M of the pulley?

• A) 8.0 kg
• B) 4.0 kg
• C) 2.0 kg
• D) 10 kg
• E) 6.0 kg

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