How long will it take for an athlete weighing 70 kg., Developing a power of 0.7 kW, to climb a 6 m long rope.

To find the time spent by the athlete in question for climbing the rope, we use the formula (the athlete’s movement along the rope is considered uniform): N = A / t = m * g * h / t, whence we express: t = m * g * h / N.

Values of constants and variables: m – athlete’s weight (m = 70 kg); g – acceleration due to gravity (g ≈ 10 m / s2); h – rope length (h = 6 m); N – athlete’s power (N = 0.7 kW = 700 W).

Let’s perform the calculation: t = m * g * h / N = 70 * 10 * 6/700 = 6 s.