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Secondary 1 | Science
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Fang Jun
Fang Jun

Secondary 1 chevron_right Science

pls help A and B questions. Thanks

Date Posted: 1 year ago
Views: 286
Alexis
Alexis
1 year ago
pressure = force/area

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
Fang Jun
Fang Jun
1 year ago
Thanks

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Darren
Darren's answer
61 answers (A Helpful Person)
1st
hope this helps
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Darren
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61 answers (A Helpful Person)
this is the other way to solve