Questions
A uniform rope of mass m hangs freely from a ceiling. A bird of mass M climbs up the rope with an acceleration a. The force exerted by the rope on the ceiling is
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Correct option is B
Net force exerted by the rope on the ceiling = force exerted by the rope itself on the ceiling + force exerted by the bird on the rope
T = T1 + T2
We have,
T1 = mg
T2 − Mg = Ma
⇒T2 = M(g + a)
∴T = M(g + a) + mg
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