Swinging balls with weights
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29 Nov A Chinese kung fu master has stunned audiences after swinging 80kg worth of bricks from his testicles. However Zhao Zhenhua dismissed critics as he was shown in this video appearing to comfortably lift the 80 kilos off the ground by tying it to his testicles using a rope.
When two (or three) balls are dropped, the two (or three) balls on the opposite side swing out. Some say that this behavior demonstrates the conservation of momentum and kinetic energy in elastic collisions.
However, if the colliding balls behave as described above with the same mass possessing the same velocity before.
Description:When the fifth ball begins accelerating, it is receiving momentum and energy from the third and fourth balls through the spring action of their compressed surfaces. For identical elastic balls of any type with initially touching balls the action is the same for the first strike, except the time to complete a collision increases in softer materials. This separates the balls, but they come back together just before as the fifth ball returns. This is due to the pendulum phenomenon of different small angle disturbances having approximately the same time to return to the center.