Advertisements
Advertisements
प्रश्न
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
Advertisements
उत्तर
The work done by two persons, A and B, does not depend upon time. Therefore, both will do the same amount of work. Thus, we arrive to the conclusion that
Work done by A = Force × height = mgh
Work done by B = Force × height = mgh
∴ mgh = mgh
`"Work done by A"/"Work done by B" = 1/1` = 1 : 1
APPEARS IN
संबंधित प्रश्न
State the S.I. unit of work and define it.
What is the condition for a force to do work on a body?
How many watts equal one horse power?
What is the ratio of SI units to CGS units of 'work'?
Write an expression for work done by a force depends?
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
The work done by the heart is 1 Joule per beat. Calculate the power of the heart if it beats 72 times in one
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
