Physics - Rotation Question with Solution | TestHub

PhysicsRotationTorque / angular accelerationEasy2 minQB
PhysicsEasysingle choice

A uniform disc of massMand radiusR is mounted on a fixed horizontal axis. A block of massmhangs from a massless string that is wrapped around the rim of the disc. The magnitude of the acceleration of the falling block (m) is

Options:

Answer:
B
Solution:

When pulley has a finite massMand radiusR, then tension in two segments of the string are different.




Here,ma=mg-T

a=mm+M2g=2m2m+Mg

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Torque / angular acceleration
⏱ 2mℹ️ Source: QB

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