A man carries a load of 50 kg through a height of 40 m in 25 sec .If the power of man is 1568 W ,his mass is
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amitsmarty909
Secondary SchoolPhysics 13+7 pts
A man carries a load of 50 kg through a height of 40m in 25 sec then what is mass
Comments (1) Report by Edwerd5938 20.07.2018
siril
do u want the mass or the power
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smrithi1235
Smrithi1235 Ambitious
Take mass of man as 'M'.
Assuming all energy is used to do work, use G.P.E = mgh.
Potential energy = (M+50) x 9.8 x 40
So G.P.E = 392M +19600
Other equation; Power = W/t
P = (392M + 19600)/25
so,
1568 x 25 = 392M + 19600
392M = 39200 - 19600
Mass 'M' = 19600/392 = 50Kg.
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