Question

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

Answer 1

Given,

mass of box $=m=150Kg$

P.E $=7350J$

WE know that

$P.E=mgh$

$7350=150\times 9.8\times h$

$h=\frac{7350}{1470}$

$h=5m$