Advertisements
Advertisements
Question
Nm is the unit of .......
Advertisements
Solution
Work
APPEARS IN
RELATED QUESTIONS
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
State two conditions when no work is done by a force.
State the S.I. unit of work and define it.
Express joule in terms of erg.
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
A block of mass 20 kg is pulled up a slope (fig.12) with a constant speed by applying a force of 500 N parallel to the slope. A and B are initial and final positions of the block.
(a) Calculate the work done by the force in moving the block from A and B.
(b) Calculate the potential energy gained by the block.

State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
State the energy changes which take place when A toy car with a wound spring moves on ground.
