Question

To what height should a box of mass 150 kg be lifted, so that its potential energy may become 7350 joules ? (g = 9.8 $m/s^2$).

Answer 1

P.E= 7350
M=150
G=9.8
H=?
so,
P.E= mgh
7350=150 $\times$9.8 $\times$ h
$\frac{7350}{150\times 9.8}$=h
h = 5 m

hence,height is 5 m