Explanation:
It is given that,
A helicopter blade spins at exactly 100 revolutions per minute.
Its tip is 5.00 m from the center of rotation, r = 5 m
(a) Let v is the average speed of the blade tip in the helicopter’s frame of reference. Distance covered by the helicopter, [tex]d=2\pi r[/tex]
In 100 revolutions, [tex]d=200\pi r=1000\pi[/tex]
So, average speed of the blade tip in one second is given by :
[tex]v=\dfrac{d}{t}[/tex]
[tex]v=\dfrac{1000\pi\ m}{60\ s}[/tex]
v = 52.35 m/s
(b) The average velocity over one revolution is zero because the net displacement in one rotation is 0.
Hence, this is the required solution.
