Question

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

Answer 1

Answer:

67.5 kg

Explanation:

potential energy=mgh

here,P.E=2250 J

m×(9.8)×(3.4)=2250

m×33.32=2250

m=2250/(33.32)

approx. = 67.53

hope it helps you ❤️❤️

Answer 2

Answer:

Given h=3.4m

P.E= 2250J

We know that PE=mgh

2250=m×9.8×3.4

m=(2250)/(9.8×3.4)

•: m=67.527kg