A small block of mass 2 kg is kept on a rough inclined surface of inclination θ=30∘ fixed in a lift. The lift goes up with a uniform speed of 1 ms−1 and the block does not slide relative to the inclined surface. The work done by the force of friction on the block in a time interval of 2 s is.

A small block of mass 2 kg is kept on a rough inclined surface of incl

1.	A small block of mass 2 kg is kept on a rough inclined surface of inclination θ=30∘ fixed in a lift. The lift goes up with a uniform speed of 1 ms−1 and the block does not slide relative to the inclined surface. The work done by the force of friction on the block in a time interval of 2 s is.
Answer» A small block of mass 2 kg is kept on a rough inclined surface of inclination $θ = 30^{\circ}$ fixed in a lift. The lift goes up with a uniform speed of 1 m $s^{- 1}$ and the block does not slide relative to the inclined surface. The work done by the force of friction on the block in a time interval of 2 s is.

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A small block of mass 2 kg is kept on a rough inclined surface of inclination θ=30∘ fixed in a lift. The lift goes up with a uniform speed of 1 ms−1 and the block does not slide relative to the inclined surface. The work done by the force of friction on the block in a time interval of 2 s is.

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