Advertisements
Advertisements
प्रश्न
Define 1 joule of energy.
Advertisements
उत्तर
1 Joule is the amount of work done by a force of 1 Newton on an object that displaces it through a distance of 1 meter in the direction of the applied force.
1 J = 1 N x 1 m.
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?

Derive a relationship between S.I. and C.C.S. unit of work
The work done on an object does not depend on ______.
P, Q and R are three forces which act as shown in fig.

The point O lies in the same plane. Given, P = Q = R = 10N
(i) Which force has the least moment about O? Give a reason.
(ii)Which force has the greatest moment about O? Give a reason.
State larger units of power.
A force can cause an object to change its ______.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
