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Question

In the given system, if we change A1 into 5A1 and F1 into F1/2, then the pressure at B piston changes from P to P0. Calculate the ratio of P and P0.

A
10:1
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B
5:1
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C
1:10
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D
1:5
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Solution

The correct option is A 10:1
According to the Pascal's law, pressure at both pistons are equal as they are on the same level.
P1=P2

Case 1:
F1A1=F2A2=P

Case 2:
F1/25A1=P0
P0=F110A1

The ratio of P and P0 is:
PP0=F1/A1F1/10A1=10:1

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