Class 11 NEET Physics System of Particles and Rotational Motion

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Question : 112 of 113

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A solid homogenous sphere of mass M and radius is moving on a rough horizontal surface, partly rolling and partly sliding. During this kind of motion of the sphere

(1988)

total kinetic energy is conserved
the angular momentum of the sphere about the point of contact with the plane is conserved
only the rotational kinetic energy about the centre of mass is conserved
angular momentum about the centre of mass is conserved

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