# Question

For the apparatus in Fig. 6.15, one ball swinging in at a speed of 2vo will not cause two balls to swing out with speeds vo.

(a) Which law of physics precludes this situation from happening: the law of conservation of momentum or the law of conservation of mechanical energy?

(b) Prove this law mathematically.

(a) Which law of physics precludes this situation from happening: the law of conservation of momentum or the law of conservation of mechanical energy?

(b) Prove this law mathematically.

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