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PhysicsQ&A LibraryTwo blocks are connected by massless string that is wrapped around a pulley. Block 1 has a mass m1=6.70m1=6.70 kg, block 2 has a mass m2=2.90m2=2.90 kg, while the pulley has a mass of 2.50 kg and a radius of 25.6 cm. When the pulley turns, there is friction in the axel that exerts a torque of magnitude 0.660 N m.If block 1 is released from rest at a height h=0.800h=0.800 m, how long does it take to drop to the floor?Question

Asked Nov 21, 2019

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Two blocks are connected by massless string that is wrapped around a pulley. Block 1 has a mass m1=6.70m1=6.70 kg, block 2 has a mass m2=2.90m2=2.90 kg, while the pulley has a mass of 2.50 kg and a radius of 25.6 cm. When the pulley turns, there is friction in the axel that exerts a torque of magnitude 0.660 N m.

If block 1 is released from rest at a height h=0.800h=0.800 m, how long does it take to drop to the floor?

Step 1

Given,

Step 2

Tension and weights acting on the block are shown below,

Step 3

As friction is acting about pulley so different amount of tension will be acting at both sides of pulley. This difference in tension in str...

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