Mass (m) of the kid sitting on the swing is 35 kg, and its center of gravity is at point C (the meeting place of the swing's arm EC with the arch p-r, created by the movement of the center of gravity of the kid). If the kid swings to a max height (when angle Psi is 55 degrees), calculate:
A) The speed of the swing as it passes point D (Psi = 0 degrees)
(There are other clauses but I really wanna get A first)
The Attempt at a Solution
I used the same formula that I used in my last non-uniform circular motion. From some reason this time it didn't work!
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