There springs scales are hooked together. The scales are at rest on the horizontal and frictionless
surface. Someone pulls at point X and Y but the whole system does not move. Scale I reads 50N.
What is the reading on scale II?
When three equal springs are connected in series, and some force is applied to either end of the system, the same force acts on each spring. Therefore, the readings on all three scales is 50 N.
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