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प्रश्न
Differentiate between thrust and pressure.
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 what direction does the buoyant force on an object immersed in a liquid act?
Name the scientist who gave he magnitude of buoyant force acting on a solid object immersed in a liquid.
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Ans the following:
Will a piece of iron float or sink in water?
How is the unit bar related to the S.I. unit pascal?
How does the liquid pressure on a diver change if:
the diver moves to the greater depth
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
How is the upthrust related to the volume of the body submerged in a liquid?
Two spheres A and B, each of volume 100 cm3 is placed on water (density = 1.0 g cm-3). The sphere A is made of wood of density 0.3 g cm-3 and sphere B is made of iron of density 8.9 g cm-3.
- Find:
- The weight of each sphere, and
- The upthrust on each sphere.
- Which sphere will float? Give reason.
Assertion (A): The buoyant force on a submerged rigid object can be considered to be acting at the center of mass of the object.
Reason (R): In rigid body, force distributed uniformly through its volume can be considered to be acting at the centre of mass of the body.
