In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative,positive or zero.
In case-1, the direction of the force acting on the block is perpendicular to the displacement. So, work done by the force is zero. In case-2, the direction of the force acting on the block is in the direction of the displacement. So, work done by the force is positive. In case-3, the direction of the force acting on the block is in the direction opposite to the displacement. So, work done by the force is negative.
In case-1, the direction of the force acting on the block is perpendicular to the displacement. So, work done by the force is zero.In case-2, the direction of the force acting on the block is in the direction of the displacement. So, work done by the force is positive.In case-3, the direction of the force acting on the block is in the direction opposite to the displacement. So, work done by the force is negative.
