Advertisements
Advertisements
प्रश्न
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
Advertisements
उत्तर
When a force F displaces a body through a distance S in the direction of the applied force, then the work done W on the body is given by the expression:
Work done = Force × Displacement
W = F × s
APPEARS IN
संबंधित प्रश्न
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

State the S.I. unit of energy.
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
State the conditions of equilibrium for a rigid body.
A boy does work when he pushes against a brick wall. (yes/no).
Is work done a scalar or a vector physical quantity?
What do you mean by a kilo joule?
