The engine power of the helicopter is 125 kW, and its weight is 2000 kg. How long does it take
| September 10, 2021 | education
The engine power of the helicopter is 125 kW, and its weight is 2000 kg. How long does it take for a helicopter to rise to an altitude of 1.5 km?
Data: N (helicopter engine power) = 125 kW (125 * 10 ^ 3 W); m (helicopter mass) = 2000 kg; h (the height to which the helicopter will have to climb) = 1.5 km (1.5 * 10 ^ 3 m).
Constants: g (acceleration due to gravity) ≈ 10 m / s2.
The time it takes for a helicopter to climb to a given altitude is determined by the formula: N = A / t = ΔEp / t = m * g * h / t, whence t = m * g * h / N.
Let’s make the calculation: t = 2000 * 10 * 1.5 * 10 ^ 3 / (125 * 10 ^ 3) = 240 s.
Answer: The helicopter will take 240 seconds.
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