Question

state two condition when work done by a force is zero?​

Answer 1

Answer:

Two conditions when the work done is zero are: (i) When there is no displacement (S=0) and, (ii) When the displacement is nonual to the direction of the force (θ=90o).

Answer 2

Two conditions when the work done is zero are: (i) When there is no displacement (S=0).

(ii) When the displacement is nonual to the direction of the force (θ=90o).