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Q.

A uniform rope of length 5m is on a smooth horizontal surface. It is being pulled by a  horizontal force of 20 N at one end. The ratio of tension at a distance of 2m from force end to tension at a distance of 2m from free end is,

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a

3 : 2

b

2 : 3

c

1 : 1

d

1 : 2

answer is D.

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Detailed Solution

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a = Acceleration of the rope = F/m

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F-TQ=m5×2×aTQ=3F5
 

Question Image

 

TP=m5×2×a=2m5a=2m5×Fm=2F5

 

TQTP=32

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