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प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
State whether work is done or not, by writing yes or no, in the following case:
A coolie stands with a box on his head for 15 min.
पर्याय
Yes
No
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उत्तर
No.
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संबंधित प्रश्न
State two conditions when no work is done by a force.
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.
State the law of conservation of energy.
If the work done by a force in moving an object through a distance of 20 cm is 24.2 J, what is the magnitude of the force?
How many watts equal one horse power?
Name five appliances or machines which use an electric motor.
If an electric bulb of 100 watt is lighted for 2 hours, how much electric energy would be consumed?
