A disc of mass M and radius R is rolling with angular speed ω on a horizontal plane as shown in figure. The magnitude of angular momentum of the disc about the origin O is
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a
12mR2ω
b
32mR2ω
c
52mR2ω
d
13mR2ω
answer is B.
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Detailed Solution
For plane motion of rigid body , if rC→ be the position vector of its COM and vC→ be theVelocity of its COM , then