Q.
A boy of mass 40 kg climbs up a rope with an acceleration of 2 ms–2. What is the tension in the rope ?
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a
472N
b
435N
c
232N
d
568N
answer is A.
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Detailed Solution
T - mg = ma⇒ T = m(g + a) = 40 (9.8 + 2)N = 472N
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