Numerical Problems || Pressure || Class : 8

Numerical Problems || Pressure || Class : 8
Numerical problem question
1. A tank of dimensions 3m x 2m x 1m is filled with water. Calculate the pressure exerted by water at the bottom of the tank.
2. A drum is filled with a liquid of depth 2m. Calculate the density of the liquid if the pressure exerted by it is 5000 N/m2.
3. The mass of a wooden block is 64 kg. If its density is 800 kg/m3, calculate its volume.
4. The density of mercury is 13.6 g/cm3. If the density of water is 1 g/cm3, calculate the relative density.
5. Calculate the pressure of water in a well if the depth of the water is 10 m.
6. Calculate the pressure exerted at the bottom of the given container. (fig)
7. If a force of 2000 N acting on a surface exerts 200 N/m2 pressure, calculate the area of the surface.
8. Calculate the pressure exerted on the ground by a boy of mass 60 kgof he stands on one foot. The area of the sole of his shoe is 150 cm2.
9. Calculate the mass of an ice block of volume 12 m3. The density of ice is 920 kg/m3.
10. The dimension of a water tank is 5m x 4m x 2m. Calculate the pressure at the bottom of the tank when it is half filled. The density of water is 1000 kg/m3 & acceleration due to gravity at that place is 9.8 m/s2.
11. The density of water is 1000 kg/m3 & that of mercury is 13600 kg/m3. Calculate the relative density.

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