comprehensive work

Resultant pressure of the liquid in case of an immersed body acts through which one of the following?

• Centre of gravity

• metacentre

• centre of pressure

• centre of buoyancy

• Bingham plastic

• Dilatant fluid

• Newtonian fluid

• Pseudoplastic fluid

The normal stress is the same in all directions at a point ina fluid only when

• the fluid is frictional

• the fluid is frictionless and incompressible

• the fluid has zero viscosity and is at rest

• one fluid layer has no motion relative to an adjacent layer

• 4

• 3.5

• 2

• 3

• 0.55

• 0.65

• 0.75

• 0.85

• 9.15 kN

• 18.3 kN

• 36.6 kN

• 12.2 kN

• 78.5 kN/m^2

• 180 kN/m^2

• 1020 kN/m^2

• 103 kN/m^2

• a

• b

• c

• d

Surface tension is due to

• viscous forces

• cohesion

• adhesion

• the difference between adhesive and cohesive forces

stability of a freely falling object is assured if its centre of

• buoyancy lies below its centre of gravity

• gravity coincides with its centre of buoyancy

• gravity lies below its metacentre

• buoyancy lies below its metacentre