To what height should a body of mass 5 kg be raised so that its potential energy is 490 J? [g = 9.8 m/s2]
The potential energy due to gravitation is given by
P.E = mgh
Where, m = Mass,
G = acceleration due to gravity,
H = height,
Given
Mass = 5 Kg,
P.E = 490 J,
G = 9.8m/s2.
H =?,
490 = 5×9.8×h
⇒
Hence the body should be raised to 10 m