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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCollision in RotationMedium2 minQB

PhysicsMediumsingle choice

A uniform thin rod of mass M and length L is hinged by a frictionless pivot at its end O, as shown in the figure. A bullet of mass m moving horizontally with a velocity v strikes the free end of the rod and gets embedded in it. The angular velocity of the system about O just after the collision is :-

Options:

Answer:

Solution:

Angular momentum about O is conserved in the collision

$m vL = (\frac{M L ^{2}}{3} + m L^{2}) ω$

$ω = \frac{3 m v}{L ( M + 3 m )}$

Answer: C

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Collision in Rotation

⏱ 2mℹ️ Source: QB

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