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प्रश्न
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उत्तर
Moment of force = applied force x perpendicular distance from the pivot
= 10 x 30 x 10 -2
= 3 Nm
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संबंधित प्रश्न
In which of the following cases is work being done:
- A boy pushing a heavy rock
- A boy climbing up the stairs
- A coolie standing with a box on his head
- A girl moving on the road.
Give reasons for the following. No work is done if a man is pushing against a wall.
Is work a scalar or a vector quantity?
What are the units of (a) work, and (b) energy?
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Is power a scalar quantity?
State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
Can two agents, doing the same work, have different power?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Food grains are getting dried in the sun.
