Directions: These questions consists of two statements each printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses
Assertion : A body of mass 10 kg is placed on a rough inclined surface ( $μ$ = 0.7). The surface is inclined to horizontal at angle 30°. Acceleration of the body down the plane will be zero.
Reason : Force of friction is zero.

Question

Directions: These questions consists of two statements each printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses

Assertion : A body of mass 10 kg is placed on a rough inclined surface ( $μ$ = 0.7). The surface is inclined to horizontal at angle 30°. Acceleration of the body down the plane will be zero.
Reason : Force of friction is zero.

Infinity Learn · Accepted Answer

mgsinθ$$=10$$×$$10$$×$$12=50$$ Nffriction $$=$$μmgcosθ$$=0.7$$×$$10$$×$$10$$×$$32=60.62$$ NSince, μmgcosθ is more, block will remain stationary.

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material