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

Question

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

Quizplus · Accepted Answer

The Answer of 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

A Cinder Block of Mass M=4 4.90 m/s24.90 \mathrm {~m} / \mathrm { s } ^ { 2 }4.90 m/s2

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