A rectangular block has a length 10cm, breadth 5cm and height 2.0cm. If it lies on a horizontal surface, and has density 1000kg/m^3, calculate the pressure it exerts on the surface.

A cylindrical jar of radius 7.0cm and height 25cm, is filled with liquid 0.80g/cm^3. What pressure exerted at the bottom of the jar by the liquid?

1 answer

what is the area of the face lying on the surface?
pressure = weight / area

mass = volume * density
weight = mass * g
pressure = force/area
1225π cm^3 * 0.80g/cm^3 * 1kg/1000g * 9.81 N/kg / 49πcm^2 = 0.1962 N/cm^2