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2 When a boy weighing 20 kgf sits at one end of a 4 mlong see-saw, it gets depressed at this end. How can itbe brought to the horizontal position by a manweighing 40 kgfAns. If the man sits at a distance 1 m from the centreon the side opposite to the boy.

Answer»

Let man sits at position x from centreso 20 ×2 = 40 ×xx =1m away from centre



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