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March 31, 2015

Homework Help: Physics(Rotational Energy)

Posted by ChristinaNguyen on Monday, July 16, 2012 at 5:42pm.

Suppose three masses are arranged as shown, connected by a rodless mass.

(2 kg)-------(6 kg)--------(4 kg)

2m 3m

a) If this object is free to rotate in space, about what point will it spin?

b) A small mass (m=0.1 kg) drops vertically onto the2 kg mass traveling 100 m/s and buries intself into the mass. What is the period of rotation of the system immediately after impact?

c) What is the rotational kinectic energy of the system after the impact?

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