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प्रश्न
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उत्तर
संबंधित प्रश्न
When is the work done by a force on a body : (a) positive, (b) negative, and (c) zero?
Explain by an example that a body may possess energy even when it is not in motion.
How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction?
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
State larger units of power.
How long should an electric motor, of power 2 H.P. operate, so as to pump 5 m3 of water from a depth of 15m. [Take g = 10 N kg−1]
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.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
