Question

A boy of mass 30 kg climbs up a staircase of height 20m..Find its gravitational potential energy..

Answer 1

Answer:

P.E= 600J

Explanation:

P.E= mgh

P.E= (30)(10)(20)                        •  g= 9.8ms^-2 approximtely = 10ms^-2

P.E= 600J