- 4

- 0

these are following information given:

2 cylinders with diameters of 50mm and 150mm are connected.

specific gravity of oil=0.8

then on top of the cylinder with the larger diameter is a 500kg mass.

so the question is on what is the force required on the smaller diameter?

another information from the diagramm is that the height of oil is the same at both cylinders but the value is not given.

1st)since height of fluid is same i know p1=p2

2nd)i find force exerted by the 500kg mass:f=mg

3rd)i know force =pressure x area:so by rearranging i can find pressure.

i have a doubt over here:is area=pi x r^2 / or is area=surface area of cylinder(but i do not know height therefore i assume its t 1st 1)

4)since i now know how to find pressure:p1=p2, therefore i have just gotta use the formula i used in step 3 again to find force @ smaller diameter

what worries me here what is purpose of the question giving the specific gravity of oil?i know i can find density of oil from there but to me its doesnt help me in solving the qns.i am worried i am going somewhere wrong in the question.thanks in advance for those who take their time off to help me in this question.

:shy:

2 cylinders with diameters of 50mm and 150mm are connected.

specific gravity of oil=0.8

then on top of the cylinder with the larger diameter is a 500kg mass.

so the question is on what is the force required on the smaller diameter?

another information from the diagramm is that the height of oil is the same at both cylinders but the value is not given.

1st)since height of fluid is same i know p1=p2

2nd)i find force exerted by the 500kg mass:f=mg

3rd)i know force =pressure x area:so by rearranging i can find pressure.

i have a doubt over here:is area=pi x r^2 / or is area=surface area of cylinder(but i do not know height therefore i assume its t 1st 1)

4)since i now know how to find pressure:p1=p2, therefore i have just gotta use the formula i used in step 3 again to find force @ smaller diameter

what worries me here what is purpose of the question giving the specific gravity of oil?i know i can find density of oil from there but to me its doesnt help me in solving the qns.i am worried i am going somewhere wrong in the question.thanks in advance for those who take their time off to help me in this question.

:shy:

Last edited: