Q.

A vertical force of magnitude F acts at the top of a string of mass 'm' and length 'l'. A body of mass M hangs at the bottom of the string.

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a

acceleration of the system isQuestion Image

b

acceleration of the system isQuestion Image

c

tension in the string at y = 0 isQuestion Image

d

tension in the string at y = l is F

answer is D.

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Detailed Solution

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Given

Mass of the string m

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But acceleration due to gravity acting down ward Question Image

Question Image Acceleration of the systemQuestion Image

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Tension in the string at Question Image

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Question Image Tension in the string at

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A vertical force of magnitude F acts at the top of a string of mass 'm' and length 'l'. A body of mass M hangs at the bottom of the string.