Advertisements
Advertisements
प्रश्न
Define work.
Define the term work
Advertisements
उत्तर
The work done by a force on a body is equal to the product of the force applied and the distance moved by the body in the direction of force i.e.,
Work done = Force × distance moved in the direction of force
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?

Write an expression for the work done when a force is acting on an object in the direction of its displacement.
Define 1 J of work.
Work is said to be done by a forte only when ................
No work is done by a force if the body
The moon is revolving around the earth in a circular path. How much work is done by the moon?
Express joule in terms of erg.
Name the forms of energy which a wound-up watch spring possesses.
MULTIPLE CHOICE TYPE
In an electric cell which in use, the change in energy is from:
A car is running at a speed of 15 km h-1 while another similar car is moving at a speed of 45 km h-1. Find the ratio of their kinetic energies.
The work done on an object does not depend on the :
A boy does work when he pushes against a brick wall. (yes/no).
Nm is the unit of .......
What is the work done when the object acted upon by a force remains at rest?
Give two examples of work done.
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
Fill in the boxe to show the corresponding energy transformation.

Fill in the boxe to show the corresponding energy transformation.

How is horse power related to the S. I. unit of power?
Can two agents, doing the same work, have different power?
What are the advantages and disadvantages of using solar cells for producing electricity?
A bucketful of water is to be drawn from a well ______ will be done when a ______ is applied to do this because there will be a ______ of water.
(displacement, work, force)
