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A boy of mass M stands on a platform of ...

A boy of mass M stands on a platform of mass m as shown in figure-2.210, supporting two stringsvia a massless support S. Strings are passing over the pulleys and other ends are connected to the platform as shown. Find the acceleration of the platform and the boy if he applies a constant force T to the string he isholding, which is connected to support S.

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The correct Answer is:
`[(2T-(M+m)g)/(M+m)]`
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