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# Physics help. watch

1. The mass of the helicopter is 1500 kg. Calculate the magnitude of the lift force.

I've done 1500x9.81= 14715 is this correct?
2. (Original post by PowerQ)
The mass of the helicopter is 1500 kg. Calculate the magnitude of the lift force.

I've done 1500x9.81= 14715 is this correct?
Assuming you are asking what magnitude of force is required to keep the helicopter in a stationary position above the ground with no forces other than gravity acting on it. then yes.

F = mg

F = 1500 kg x 9.81 m/s = 14715 Newtons
3. (Original post by uberteknik)
Assuming you are asking what magnitude of force is required to keep the helicopter in a stationary position above the ground with no forces other than gravity acting on it. then yes.

F = mg

F = 1500 kg x 9.81 m/s = 14715 Newtons
Thanks.

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