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# Liquid pressure.pptx

Liquid pressure

Liquid pressure

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### Liquid pressure.pptx

1. 1. Liquid Pressure
2. 2. Introductory Activity
3. 3. • Does liquid exert pressure? • If so, towards which direction does liquid exerts more pressure ?
4. 4. The thrust acting per unit area by a liquid is liquid pressure. Liquid exerts force on all sides of the container in which they are taken
5. 5. Developmental activity • How Does Liquid Pressure change with increase in height of the liquid column?
6. 6. The pressure exerted by a liquid column increases with increase in Height
7. 7. • Why is the expansion of the balloons different ?
8. 8. • Liquid pressure is directly proportional to the weight of liquid column over unit area. That is, it depends on the height of liquid column and density of the liquid. • If the height of the liquid column is ‘h’, density of the liquid is ‘d’ and acceleration due to gravity is ‘g’, then liquid pressure P=hdg
9. 9. Question A water tank of height 4cm is completely filled with water a) Find the pressure at the bottom of the water tank b) If the water level comes to half, what will be the pressure at the bottom of the tank. (Acceleration due to gravity, g=10m/s2, d=1000 kg/m3)
10. 10. Solution A water tank of height 4cm is completely filled with water a) P=hdg = 4*1000*10 = 40,000Pa b) P=hdg, h=2m =2*1000*10 =20,000Pa
11. 11. Application of Liquid Pressure in real life scenario
12. 12. Review Questions • What is liquid pressure? Which are the factors affecting it ? • Give the equation to calculate liquid pressure
13. 13. Follow Up Activity Find reason for the following and prepare a short note. • Submarines are built using stronger materials and with thicker walls • Bubbles becomes larger as they rise towards the surface of water • Bubbles formed in water is smaller than bubbles formed in kerosine.