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Q.

A uniform rope of mass 1kg hangs freely from a ceiling. A bird of mass 0.25kg climbs up the rope with an acceleration 1ms-2. The force exerted by the rope on the ceiling is(g=10ms-2)

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a

5.75N

b

12.75N

c

0

d

dependent on the position of bird on the rope

answer is B.

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Detailed Solution

Ma+Mg+mg =0.25(1)+0.25(10)+1(10)=12.75N
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