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Liquid pressure.pptx
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- 3. • Does liquidexert pressure? • If so, towards which direction does liquid exerts more pressure ?
- 4. The thrust actingper unit area by a liquid is liquid pressure. Liquid exerts force on all sides of the container in which they are taken
- 5. Developmental activity • How DoesLiquid Pressure change with increase in height of the liquid column?
- 6. The pressure exertedby a liquid column increases with increase in Height
- 7. • Why isthe expansion of the balloons different ?
- 8. • Liquid pressureis 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. Question A water tankof 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. Solution A water tankof 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. Application of LiquidPressure in real life scenario
- 12. Review Questions • What isliquid pressure? Which are the factors affecting it ? • Give the equation to calculate liquid pressure
- 13. Follow Up Activity Find reasonfor 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.