A block of mass \( M \) is pulled along a horizontal frictionless surface by a rope of mass \( m...

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A block of mass \( M \) is pulled along a horizontal frictionless surface by a rope of mass \( m \). If a force \( P \) is applied at the free end of the rope, the force exerted by the rope on the block will be
[CPMT 1972, 75, 82;
CBSE PMT 1993; MP PMT 1996; AIEEE 2003]
(a) \( P \)
(b) \( \frac{P m}{M+m} \)
(c) \( \frac{P M}{M+m} \)
(d) \( \frac{P m}{M-m} \)
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