College Physics ›› 2022, Vol. 41 ›› Issue (1): 27-.doi: 10.16854 / j.cnki.1000-0712.210184
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LU Jun-ling,GU Chen,REN Nai-jing,MA Bo-yi
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Abstract:
A pure rolling double steel ball collision experiment is carried out on a wide
and narrow horizontal rails,and it is found that it is significantly different from the double
steel ball collision experiment in sliding motion; the reason is that the collision of the pure
rolling double steel ball is the frontal and tangential collision at the colli- sion point. The
two types of collisions obey different dynamic laws; after a collision,the motion state of the two
steel balls is no longer pure rolling. To return to pure rolling,each steel ball must pass through
the interaction between it- self and the guide rail. The effect is to go through a self-adjusting
stage; the energy loss in the self-adjusting stage is related to the rolling radius of the steel
ball and the deviation of its immediate state from pure rolling.
Key words: pure rolling, parallel rails, compound collision, kinetic energy loss, self-adjusting stage
LU Jun-ling, GU Chen, REN Nai-jing, MA Bo-yi. Collision test of pure rolling double steel balls on wide and narrow rails[J].College Physics, 2022, 41(1): 27-.
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