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With the Use of Archimedes' Principle, State How You Will Find Relative Density of a Solid Denser than Water and Insoluble in It. How Will You Modify Your Experiments If the Solid is S - Physics

Answer in Brief

With the use of Archimedes' principle, state how you will find relative density of a solid denser than water and insoluble in it. How will you modify your experiments if the solid is soluble in water? 

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Solution

Steps:

(i) With the help of a physical balance, find the weight, W1 of the given solid.

(ii) Immerse the solid completely in a beaker filled with water such that it does not touch the walls and bottom of beaker, and find the weight W2 of solid in water.

Observations:

Loss in weight of solid when immersed in water = (W1 - W2) gf

R.D. = Weight of solid in air/Loss of weight of solid in water

R.D. = W1/(W1 - W2).

If the solid is soluble in water, then instead of water, take a liquid in which the solid is insoluble and it sinks in the liquid.

Then, R.D. = (Weight of solid in air/Loss of weight of solid in liquid) x R.D. of the liquid

Concept: Archimedes' Principle
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APPEARS IN

Selina Concise Physics Class 9 ICSE
Chapter 5 Upthrust in Fluids, Archimedes’ Principle and Floatation
Exercise 5 (B) | Q 12 | Page 116
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