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प्रश्न
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उत्तर
This is because at each point of the circular path, the displacement is perpendicular to the force, which is directed towards the centre, along the radius.
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संबंधित प्रश्न
Work done by a boy depends on the time in which he does work.
When does a force perform work?
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.
The velocity of a car increases from 54 km/hr to 72 km/hr. How much is the work done if the mass of the car is 1500 kg?
How many joules are there in 1 mega joule?
Give an example
Chemical energy changes to heat energy.
Name the material commonly used for the manufacturing of solar cells.
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
