Question

for part a, i got 360J for intital energy and for part b and c I need help
Hoop Ring M-2kg I-(M)(R)*2 M-4 kg 2 kg Disk u-0.2 M-4 kg 9 6 kg 37 meters 6 meters This system is at rest initially, when it

A) Ei= Ki + Ui (we use 10 for gravity)

= 0 + mgh

= (6)(10)(6)

= 360J

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