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maniacp08
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A uniform rod of length L1 = 2.2 m and mass M = 2.8 kg is supported by a hinge at one end and is free to rotate in the vertical plane. The rod is released from rest in the position shown. A particle of mass m is supported by a thin string of length L2 = 1.8 m from the hinge. The particle sticks to the rod on contact. After the collision, θmax = 40°.
(a) Find m.
kg
(b) How much energy is dissipated during the collision?
J
Relevant Equations:
Angular momentum = I * omega
I'm having trouble starting this problem. I should compare using energy of conservation before and after collision correct?
I for the thin rod = 1/3 ML^2
Energy of conservation for the rod before collision
Kf - Ki + Uf - Ui = 0
Ki = 0
Kf + Uf - Ui = 0
1/2(1/3ML^2) * omega ^2 + Uf - Ui = 0
What will Uf and Ui be?
Im not even sure if what I am doing is correct, can someone guide me?