# How much work does it take to raise a 5 kg  weight 14 m ?

The force of gravity is equal to the mass of the object times the acceleration of gravity $\left(g = 9.81 \frac{m}{{s}^{2}}\right)$.
$w = m \times g \times d = 5 k g \times 9.81 \frac{m}{{s}^{2}} \times 14 m = 687 J$