Physics - Rotation Question with Solution | TestHub

PhysicsRotationCollision in RotationEasy2 minPYQ_2020

PhysicsEasysingle choice

A uniform solid sphere of mass $m$ , radius $R$ moving with velocity $v_{0}$ is rolling without slipping on a frictionless surface. It collides elastically with a frictionless vertical wall. Ratio of magnitude of angular momentum of the sphere before and after the collision about its bottommost point is

Options:

Answer:

Solution:

$L_{i n} = m v_{0} R + \frac{2}{5} m R^{2} w$

$L_{i n} = \frac{7}{5} m v_{0} R$

$L_{f i n a l} = m v_{0} R - \frac{2}{5} m R^{2} ω$

$= \frac{3}{5} m v R$

$R a t i o = \frac{7}{3}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:RotationSubtopic:Collision in Rotation

⏱ 2mℹ️ Source: PYQ_2020

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