Advertisements
Advertisements
प्रश्न
Differentiate between thrust and pressure.
Advertisements
उत्तर
Thrust is the force applied on a surface in a perpendicular direction and it is a vector quantity. The effect of thrust per unit area is pressure, and it is a scalar quantity.
संबंधित प्रश्न
In which direction does the buoyant force on an object due to a liquid act ?
Name the force which makes heavy objects appear light when immersed in a liquid.
Name the scientist who gave he magnitude of buoyant force acting on a solid object immersed in a liquid.
Describe an experiment to determine the density of the material of a coin.
Explain the meaning of the statement
‘Relative density of aluminium is 2.7’.
A block of iron of mass 7.5 kg and of dimensions 12 cm × 8 cm × 10 cm is kept on a table top on its base of side 12 cm × 8 cm.
Calculate:
- Thrust and
- Pressure exerted on the table top
Take 1 kgf = 10 N.
Two cylindrical vessels fitted with pistons A and B of area of cross-section 8 cm2 and 320 cm2 respectively are joined at their bottom by a tube and they are completely filled with water. When a mass of 4 kg is placed on piston A, Find:
- the pressure on piston A,
- the pressure on piston B, and
- the thrust on piston B.
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
- What is the pressure on the free surface of the liquid?
- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
A body will sink if the weight of the body is greater than the buoyant force.
In a fluid, buoyant force exists because the pressure at the ______ of an object is greater than the pressure at the top.
