Originally Posted by
whirly_bird
as the blades centre of mass moves closer to the point of rotation (the mast) as it flaps up, the blade's speed will need to increase to conserve angular momentum.
Just a point regarding semantics, but the blade doesn't speed up
because of the law of conservation of angular momentum. The law is a simple and accurate way to predict a rotating body's behaviour, but the the
cause of the increase in rotational velocity is slightly more complicated than
"will increase to conserve momentum".
P.s. I realised I used the same explanatory mistake after watching
.