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प्रश्न
Name the quality which is measured in kW.
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उत्तर
Power is measure in kW
संबंधित प्रश्न
A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in 4 minutes and a girl weighing 30 kgf does the same in 3 minutes. Compare:
- The work done by them.
- The power developed by them.
How is the unit horsepower related to the S.I. unit of power?
What do you mean by equilibrium of a body?
A body is provided at a point. A force of 20 N is applied at a distance of 40 cm from the pivot. Find the moment of force about the pivot.
What do you mean by uniform circular motion?
How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
State the condition when the work done by the force is positive
Derive a relation between the S.I. and C.G.S. unit of force.
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
A coolie carries a load of 30 kgf through a distance of 500 m in 5 minutes while another coolie B carries the same load through the same distance in 10 minutes. Compare the
(i) work done, and
(ii) power developed. (Take: g = 10md−2)
