The machine evenly lifts a body weighing 20 kg to a height of h = 10 m in a time t = 20 s. What is its power equal to?

Initial data: m (weight of the lifted body) = 20 kg; g (the height to which the body was raised) = 10 m; t (rise time) = 20 s.

Reference values: g (acceleration due to gravity) = 10 m / s ^ 2.

Let’s define the formula for calculating the mechanical power of the machine: N = A / t = Ft * S / t = m * g * h / t.

Let’s calculate: N = 20 * 10 * 10/20 = 100 W.

Answer: The mechanical power of the machine is 100 W.