Advertisements
Advertisements
प्रश्न
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B of same mass does the same in 15 s. Compare the power developed by the persons A and B.
Advertisements
उत्तर
Power developed by the persons A and B is
`p_1/p_2 = ((mgh)/t_1)/((mgh)/t_2) = t_2/t_1 = 15/20 = 3:4`
APPEARS IN
संबंधित प्रश्न
When does a force do work?
A man having a box on his head, climbs up a slope and another man having an identical box walks the same distance on a levelled road.
Who does more work against the force of gravity and why?
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
How is kilowatt hour related to joule?
Name the quality which is measured in kW.
State the factors on which moment of force about a point depends.
State the S.I. and C.G.S. units of energy. How are they related?
Relate 1 KWh (kilowatt hour) with joule.
State the C.G.S. unit of work. How it is related to its S.I. unit?
