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प्रश्न
Nm is the unit of .......
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उत्तर
Work
APPEARS IN
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.
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.
Why does a spanner have a long handle?
A 100 W electric lamp emits energy in the form of light at the rate 10 J per second. What percentage of electric energy does the lamp transform into light energy?
Give an example
Chemical energy changes to heat energy.
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
