The stacker lifts a 100 kg hay heap to a height of 5 m. What kind of work does it do?

With a straight-line rise of the shock and a constant value of the force applied to it to overcome the force of gravity, the work is equal to:
A = F * S, where F is the force of gravity (F = m * g (m is the mass of the hay heap (m = 100 kg), g is the acceleration of gravity (we take g equal to 10 m / s ^ 2)), S is moving a haystack (S = 5 m).
Let’s calculate the work of the stacker:
A = F * S = m * g * S = 100 * 10 * 5 = 5000 J = 5 kJ.
Answer: The work of lifting a hay heap is 5 kJ.