A toy helicopter of mass 5.0kg rises with uniform acceleration from rest until a height of 60m in 10s. what is the upthrust produced by the helicopter rotor?

Question

eric_d · Answer

@YanaSidlinskiy

yanasidlinskiy · Answer

I'm not that great of a physics person. I would rather sit back and learn when someone walk this though with you. I think @Abhisar  might know the answer and help you out.

eric_d · Answer

okay..

eric_d · Answer

@Abhisar

abhisar · Answer

Do u know the meaning of thrust ?

eric_d · Answer

nt sure

eric_d · Answer

upward force?

abhisar · Answer

It's basically nothing else than force !

abhisar · Answer

Yes upthrust means upward force which was provided inn a short duration of time.

eric_d · Answer

ok..

mrnood · Answer

@Abhisar 
It is simply the force - the time is not relevant in this case.

abhisar · Answer

Here, for helicopter
u=0
s=60
t=10s

mrnood · Answer

The resultant force is upthrust - weight

then acceleration = f/m

you can work out the acceleration from the question, hence work out the resultant force, hence work out the thrust

abhisar · Answer

Can u calculate the acceleration ?

eric_d · Answer

v=u+at
v=0+a(60)

abhisar · Answer

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