Newton's laws questionWatch
i) The downwards force of the bird on the air as it beats its wings?
ii) The upwards force of the air on the bird
iii) The velocity imparted to the air if the density of the air is 1.29 kg/m^3
Not sure if this is correct:
i) just 0.45g
ii) same as i
iii) using F=ρAv^2 v=sqrt(0.45g/(1.29x0.28))
The downwards force is the gravutational force in this concern, so F = m*g
Think about it again. Upwards force can't be equal tp downwards force.
i) and ii) are the Newton 3rd Law action and reaction and so must be equal.
F(up) = -F(down) <=> m*g = -m*g
Without any flow resistance.
Thanks for your correction!