1.

A man carrying a bag of total mass 25kg climbs up to a height of 10m in 50 seconds. Calculate the power delivered by him on the bag. ( Ans : 49J)

Answer»

Given conditions ⇒

Mass of the BODY = 25 KG.

Height = 10 m.

Time = 50 seconds.


Kinetic Energy = mgh

= 25 × 9.8 × 10

= 2450 J


Now,

POWER = Energy/Time

∴ P = 2450/50

∴ P = 49 W.



Hence, the Power used by the man is 49 W.



Hope it helps.



Discussion

No Comment Found

Related InterviewSolutions