The area of the cross-section of the wider tube shown in the figure is 900 cm2. If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes. Density of water = 1000 kg/m3
0.50 cm
50 cm
consider the following diagram,
Let the difference in the height of two columns be 'H' Equating,PA=PB
MgA+Patm=Patm+ρgH
45×10×104900=1000×10×H
⇒H=0.50m=50 cm