1.

A sphere is moving on a smooth surface with linear speed v_(0) and angular velocity omega_(0). It finds a rough inclined surface and it starts climbing up:

Answer»

if `v_(0)gtRomega_(0)` FRICTION force will act downwards
if `v_(0)ltRomega_(0)`, frictio force will act upwards
if `v_(0)=Romega_(0)` no friction force will act
if all above case friction will act upwards

Answer :A


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