Question

Two cylindrical vessels fitted with pistons A and B of
area of cross section 8 cm2 and 320 cm² respectively,
are joined at their bottom by a tube and they are
completely filled with water. When a mass of 4 kg is
placed on piston A,find : (i) the pressure on piston A,
(ii) the pressure on piston B, and (iii) the thrust on
piston B​

Answer 1

Answer:

Explanation:

Pressure = Force/Area

But F=Ma

a=g=10m/s^2

F= 4 * 10 =40N

P= 40/8

P=5Pa (pressure on A).

ii) pressure on B.

P1=P2

F/A1 = F2/A2

40/8=F2/320

F2= 320*40/8

F2= 320*5

F2=1600N

Therefore,

Pressure on Piston B= F/A

= 1600/320

=5Pa.

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