Two masses of I kg and $$5$$ kg are attached to the ends of a massless string passing over a pulley of negligible weight. The pulley itself is attached to a light spring balance as shown in figure. The masses start moving during this interval; the reading of spring balance will be:

Question

Infinity Learn · Accepted Answer

Suppose T be the tension in each part of the string passing over the pulley. Iis given by:T $$=$$ $$2m1m2gm1+m2$$ $$=$$ $$2$$×$$1$$×$$51+5g$$ $$=$$ $$53gFor$$ equilibrium of the pulley there is an upward force of $$2T$$ acting on the string joining the pulley to the spring. Therefore, reading of spring balance will be $$2T$$ $$=$$ $$103$$ Kgf . So reading will be $$103$$ kgf which is less than $$6$$ kgf .

Two masses of I kg and 5 kg are attached to the ends of a massless string passing over a pulley of negligible weight. The pulley itself is attached to a light spring balance as shown in figure. The masses start moving during this interval; the reading of spring balance will be:

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