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9.(B) 30 J(C) 40 Jenter (who is stationary relative to box) finds that when anwith an acceleration of 10 m/sInside a horizontally moving box, anobject is placed on a smooth horizontal tableIn this box if 1 kg body suspen(w.r.t. experimenter) will be. (Take g -10 m/s(A) 10 Nis sand is released, it movesls suspended with a light string, the tension in the string in equilibrium position.(B) 10/2 N(D) zero(C) 20 Nth nulley mass of pulley is

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