Question

Calculate the height through which a body of mass 0.5 kg is lifted if the energy spent in doing so is 1.0 J. Take g = 10 m s^-2.

Answer 1

Mass = 0.5 kg

Energy = 1 J

Gravitational potential energy = mgh

⇒ 1 = 0.5 × 10 × h

⇒ 1 = 5h

⇒ `1/5` = h

Height, h = 0.2 m