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A force of 9N is applied to pull the block of mass 4 kg with a string of mass 0.5 kg.Find the force of reaction exerted by block on the rope.
Let mass of rope = mr = 0.5 kg, mass of block = mb = 4 kg, force applied = F = 9 NLet the tension in the string be TCommon acceleration of the system, ac = F÷(mr+mb) = 9/4.5 = 2 m/s2For the block to be moving with this acceleration, tension, T = mb.ac = 4*2 = 8 N.THANKS
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