Question

The work done in pushing a block of mass 10 kg from bottom to the top of a frictionless inclined plane 5 m long and 3 m high is : $(g=9.8m/se{c}^2)$

Answer 1

Work done on pushing the block is.

$w=mgh$ ( as no work done against friction)

$10\times 9.8\times 3$

$\Rightarrow w=294J$