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प्रश्न
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.
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उत्तर
The grains of corn are drying in the heat of the sun; here, also, no work is being done because the grains are stable in their place. There is no displacement in them.
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संबंधित प्रश्न
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
A coolie does no work against the force of gravity while carrying a luggage on a road.
How much energy is gained by a box of mass 20 kg when a man, carrying the box waits for 5 minutes for a bus?
How many watts equal one horse power?
On what factors does the work done by a force depend?
Complete the following sentences:
The SI unit of work is ....... and of power is .......
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
