Advertisements
Advertisements
Question
Name the quality which is measured in kW.
Advertisements
Solution
Power is measure in kW
RELATED QUESTIONS
How is the unit horsepower related to the S.I. unit of power?
State the principle of moments.
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.
Work is a scalar quantity because it is a measure of transfer of energy without indicating any direction
A man spends 7.4 kJ energy in displacing a body by 74 m in the direction in which he applies force, in 2.5 s. Calculate the power spent (in H.P) by the man.
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
The world record for weight lifting was held by Sergei Didyk of the USSR. He lifted 261 kg to a height of 2.3 m in 4s; find:
(a) Weight lifted by him
(b) Work done by him
(c) Power developed by him. (g = 10m/s2)
A machine raises a load of 750 N through a height of 16 m in 5 seconds. Calculate the power at which the machine works.
State the C.G.S. unit of work. How it is related to its S.I. unit?
