Question

calculate the work in pulling up a block of wood of weight 2kn of length of 10 m on a smooth inclind plane at an angle 15 degree with horizontal

Answer 1

simple !!

work done => F .S cos∅


F = mg Sin∅



2× 10× sin15°

=>13 approx .


now , work done

=> F.s

=> 13× 10

130 Jule


hope it help you


thanks