A boy climbs on to a wall that is 3.4 m high and gains 2250 J of potential energy. What is the mass of the boy? Take g = 9.8 m/Sec²

67.5 kg

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Solution

The correct option is A
67.5 kg

Given:

P.E.=2250 J

g=9.8 m/s²

h=3.4 m

P.E = m g h

2250 = m x 9.8 x 3.4

m = ²²⁵⁰/_{9.8 x 3.4}

m = 67.5 kg

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