A 60 kg man runs up a staircase in 12 sec while 50 kg man runs up the same staircase in 11 sec the ratio of rate of doing their work is
Answer (1)
19th Oct, 2018
The rate of work done= Total work done /time take.
For 60kg persons,
total work done=Change in potential energy
=mgH
=60gH
Rate of work done=60gH/12=5gH
for a 50kg person,
total work done=Change in potential energy
=mgH
=50gH
rate of work done=50gH/11
therefore the ratio of the rate of work done=5gH*11/50gH
=11/10
=1.1
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