One end of a massless rope, which passes over a massless and frictionless pulley $P$ is tied to a hook $C$ while the other end is free. Maximum tension that the rope can bear is $360 N$ . With what value of maximum safe acceleration (in $ms^{- 2}$ ) can a man of $60 kg$ climb on the rope?

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T − 60 g = 60 a ; T = 3000 N ; ∴ a = 4 ms − 2

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