Answer: 1.75m
Explanation:
Given that,
mass = 200 kg
height by which mass was raised = ?
Energy required = 3420J
Apply the formula for calculating energy,
Energy = mass x acceleration due to gravity (g) x height
Energy = mgh
3420J = 200kg x 9.8m/s^2 x height
3420J = 1960kgm/s^2 x height
Height = 3420J / 1960kgm/s^2
Height = 1.75m
Thus, the mass was raised 1.75 metres high
