Question

a man climbs on to a wall that is 3.6m high and gains 2268 joules of potential energy what is the mass of man.
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Answer 1

Answer:

Mass of man = 64.28 kg

Explanation:

PE=mgh

2268=m*9.8*3.6

m=2268/(9.8*3.6)

m=64.28 kg (approximately)

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Answer 2

Answer:

Mass of the body = 63 Kg

Explanation:

Given,

Height of the wall = 3.6 m

Potential energy = 2268 J.

We know that Potential energy = Mass * g * height

P.E = mgh

2268= m * 9.8* 3.6

2268= m * 35.28

2268/35.28= m

m = 64.285 Kg. [ or ]

We can take g = 10

then,

2268= m * 10*3.6

2268/36= m

m = 63 Kg.