A block of mass \( m \) is pulled by a uniform chain of mass \( m \...

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A block of mass \( m \) is pulled by a uniform chain of mass \( m \) tied to it by applying a force \( F \) at the other end of the chain. The tension at a point \( P \) which is at a distance of quarter of the length of the chain from the free end, will be
A. \( \frac{3 F}{4} \) B. \( \frac{7 F}{8} \) C. \( \frac{6 F}{7} \) D. \( \frac{4 F}{5} \)
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