A body is acted upon by a force. State two conditions when the work done is zero.
The work done is zero when
(a) Displacement is zero. (b) The force acts at right angles to the direction of the displacement.
State two conditions for a body, acted upon by several forces, to be in equilibrium.
State two conditions when no work is done by a force.
A body when acted upon by a force of 10kgf gets displaced by 0.5m calculate the work done by the force when the displacement is in the direction of force