Mathematics, 18.05.2021 21:10, atirahmalik2425

a helicopter of mass 800 kg rises to a height of 170 in 20 seconds, before setting off in horizontal flight. calculate the potential energy gain of the helicopter, and hence estimate the mean power of its engine. state a form of kinetic energy that has been ignored in this model.

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a helicopter of mass 800 kg rises to a height of 170 in 20 seconds, before setting off in horizontal...