- #1

- 14

- 0

for example, a helicopter is falling but is providing a small thrust. say the helicopters mass is 50kg and it provides 100N of thrust upwards

therefore, using w=mg, the weight would be 490.5 N , and subtracting the 100 N of thrust would make the apparent weight 390.5

say its falling 50 meters, the Ep=mgh, Ep=390.5x50, Ep= 19525N

then, when using Ek=0.5mv^2, to find the velocity before it hits the ground, dose the apparent weight need to be considered or is it only the mass

would it be correct to say v=(2(50)(19525))^0.5=1397.32m/s or does the apparent weight need to be thought about when calculating velocity like this?

Thanks