If the lower string is pulled slowly, the upper string eventually breaks, because it supports both the applied force and the hanging weight. However, if the lower string is suddenly jerked, it is the one which breaks. The traditional explanation is that the inertia of the mass keeps it from moving and hence from stretching the upper string.
(1F20.10) Inertia Ball
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If the lower string is pulled slowly, the upper string eventually breaks, because it supports both the applied force and the hanging weight. However, if the lower string is suddenly jerked, it is the one which breaks. The traditional explanation is that the inertia of the mass keeps it from moving and hence from stretching the upper string.
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