2. A hydraulic lift has two pistons A and B of areas of cross- section A, and A2. Forces F, and F2 are acting on them respectively. If the force on the piston A is doubled and area of cross-section of piston B is reduced to one third, find the new force on piston B. Given that original force on it was 30 N. (Ans. 20 N)
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20N
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