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Secondary 1 | Science
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pls help A and B questions. Thanks
a) for this question, ignore the big piston and the car; only the small piston's force and small piston's area is relevant. The phrasing of the question also suggests that you only have to deal with the smaller piston.
pressure (under small piston) = 1000N/0.5m^2 = 2000Pa
b) This question expects you to assume that the pressure in a liquid is the same at any point in the liquid. IE, the pressure of liquid at smaller piston = the pressure of liquid at big piston = 2000Pa.
force exerted by liquid on big piston = pressure x area = 2000 x 6.0 = 12000N
hope this helps
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