A hollow, thin shelled sphere of radius rK=0.08 m and mass mK=1.8 kg is attached at one end to a rod of mass mS=mK and the length L=5?rK. The sphere-rod system can pivot without friction about a horizontal axis at (A),from its equilibrium angular position, and then released.
A. After what time does the sphere reach the highest point on
the right for the first time?
t= 0.653 s
B. Determine the speed of the sphere when it pivots through the
lowest point, at the equilibrium position (B).
v= 0.000 m/s
Note: The answers are given I just want to know how they got the answer
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