Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 6

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A solid sphere of density $η (> 1)$ times lighter than water is suspended in a water tank by a string tied to its base as shown in figure. If the mass of the sphere is $m$ then the tension in the string is given by,

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Important Questions on Fluid Mechanics

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 7

A hollow sphere of volume

V

is floating on water surface with half immersed in it. What should be the minimum volume of water poured inside the sphere so that the sphere now sinks into the water?

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 8

Two solids A and B float in water. 'A' floats with half of its volume immersed 'B' floats with

2 / 3

of its volume immersed. Compare the densities of A and B

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 9

The fraction of floating object of volume

V_{0}

and density

d_{0}

above the surface of a liquid of density

d

will be

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 10

Density of the ice is

ρ

and that of water is

σ .

What will be the decrease in volume when a mass

M

of ice melts.

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 11

The reading of a spring balance when a block is suspended from it in air is

60

N .

This reading is changed to

40 N

when the block is fully submerged in water. The specific gravity of the block must be:

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 12

A block of steel of size

5 cm \times 5 cm \times 5 cm

is weighed in water. If the relative density of steel is

7

, then, its apparent weight is

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 13

Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one body is

36 g

and its density is

9 g {cm}^{- 3} .

If the mass of the other is

48 g,

its density in

g {cm}^{- 3}

is

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 14

In order that a floating object be in a stable equilibrium, its centre of buoyancy should be _____.