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Longitudinal Strain

45.A block of...

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45.A block of mass m is to be raised by a light rope from rest to rest through a height 60 m, the maximum tension of which the rope can safely bear is 4mg. The least time in which the ascent can be made is

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10

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k g . w t .

The minimum time in which the stone can be raised through a height

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(Taking

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Q. 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

840 N

. With what value of maximum safe acceleration (in

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A man of mass 30 kg uses a rope to climb which bears only 450 N.The maximum acceleration with which he can climb safely.......

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