5. If exactly 20 bolts of 2.5cm diameter are needed to hold an air chamber together at A-A as a result of the high pressure within, how many bolts will be needed at B-B ? Here D=40cm and d=20cm. -D-

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.