मराठी

For a Floating Body, Its Weight W and Upthrust Fb on It Are Related as : - Physics

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प्रश्न

For a floating body, its weight W and upthrust FB on it are related as :

पर्याय

  • W > FB

  • W < FB

  • W = FB

  • Nothing can be said

MCQ

उत्तर

For a floating body, its weight W and upthrust FB on it are related as : W= FB 

shaalaa.com
Principle of Floatation (Laws of Flotation)
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Upthrust in Fluids, Archimedes’ Principle and Floatation - Exercise 5 (C) [पृष्ठ १२४]

APPEARS IN

सेलिना Concise Physics [English] Class 9 ICSE
पाठ 5 Upthrust in Fluids, Archimedes’ Principle and Floatation
Exercise 5 (C) | Q 1 | पृष्ठ १२४

संबंधित प्रश्‍न

A body is held immersed in a liquid. (i) Name the two forces acting on the body and draw a diagram to show these forces. (ii) State how the magnitudes of two forces mentioned in part (i) determine whether the body will float or sink in liquid when it is released. (iii) What is the net force on the body if it (a) sinks and (b) floats? 


A solid iron ball of mass 500 g is dropped in mercury contained in a beaker. (a) Will the ball float or sink? Give reasons. (b) What will be the apparent weight of the ball? 


A block of wood is so loaded that it just floats in water at room temperature. What change will occur in the state of floatation, if

(a) Some salt is added to water, (b) Water is heated?

Give reasons. 


A body of volume V and density ρs , floats with volume v inside a liquid of density ρL. Show that `"v"/V = ρ_s/ρ_L` .


An iron nail sinks in the water while an iron ship floats on water. Explain the reason. 


Explain the following : 

Icebergs floating in sea are dangerous for ships.


A body of weight W is floating in a liquid. Its apparent weight will be


A weather forecasting plastic balloon of volume 15 m3 contains hydrogen of density 0.09 kg m-3. The volume of equipment carried by the balloon is negligible compared to its own volume. The mass of an empty balloon alone is 7.15 kg. The balloon is floating in air of density of 1.3 kg m-3Calculate:

(i) The mass of hydrogen in the balloon,
(ii) The mass of hydrogen and balloon,
(iii) The total mass of hydrogen, balloon and equipment if the mass of equipment is x kg,
(iv) The mass of air displaced by balloon and
(v) The mass of equipment using the law of floatation.
 


Name an instrument based on this principle. State two uses of the instrument that you describe.


Where do we use lactometers?


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