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Physics - Rotation Question with Solution | TestHub

PhysicsRotationTorque / angular accelerationEasy2 minQB

PhysicsEasysingle choice

A Uniform rod $A B$ is hinged at its end $A$ and the other end of the rod is connected to a block through a massless string as shown in the figure. The pulley is smooth and massless. Masses of the block and the rod are same and are equal to $m$ . The acceleration of the block just after the release from this position is

Options:

Answer:

Solution:

For the rod: $T ℓ - mg (\frac{ℓ}{2}) = \frac{m ℓ^{2}}{3} \times \frac{a}{ℓ}$ ...(i)

For the: $m g - T = m a$ ...(ii)

Solving (i) and (ii) we get: $a = \frac{3 g}{8}$

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Torque / angular acceleration

⏱ 2mℹ️ Source: QB

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