1.

A body of mass `m` is moved up (slowly) the plane of verying slope by a tangential force upto height `h`. The coefficient of friction between the surface and the block is `mu`. Select correct option(s)A. The work done by gravity on the block from `A` to `B` depends upon the height `h`.B. The work done by gravity on the block from `A` to `B` do not depends upon the height `h`.C. Total work done by all forces on the block from `A` to `B` is zeroD. From `A` to `B` work done by friction force on the block is negative.

Answer» Correct Answer - A::C::D
Work done due to `mg` depends on height only.


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