A piston of cross-sectional area 100 cm2 is used in a hydraulic press to exert a force of 107 dyne on the water. The cross-sectional area of the other piston which supports an object having a mass 2000 kg is:

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100 cm2

109 cm2

2 x 104 cm2

2 x 1010 cm2

answer is C.

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Detailed Solution

F2A2=F1A1⇒A2=F2F1×A1 =2×109107×100=2×104cm2

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