**Q.No.6.5:-**

**State Bernoulli’s relation for a liquid in motion and describe some of its applications.**

**Ans:-****Bernoulli’s equation is the fundamental**

**equation in fluid dynamics which states that the sum of pressure and kinetic and potential energies per unit volume is a steady flow of an incompressible and non viscous liquid has the same value.**

**Where” ρ” is the density of the fluid and “g” is the acceleration due to gravity.**

**Some of the applications of Bernoulli’s equation are**

**(i)**

**Lift in an airplane.**

**(ii)**

**Swing of a cricket ball**

**(iii)**

**Working of a filter pump**

**(iv)**

**Measurement of speed of liquid or gas flow through a pipe**

**.**

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