A solid of density ρ has weight w . Show that its apparent weight will be w 1 - ρ l ρ when it is completely immersed in a liquid of density ρ l .

Weight of the given solid = w Therefore, the mass of the solid = w g Density is equal to the mass divided by volume. Volume = Mass Density = w / g ρ = w ρ g The volume of liquid displaced by the solid = Volume of the solid = w ρ g Upthrust on the solid is equal to the product of the volume of the liquid displaced, the density of a liquid, and acceleration due to gravity. Upthrust on the solid = w ρ g × ρ l × g = w ρ l ρ The apparent weight of the solid is equal to the difference between true weight and upthrust. Apparent weight = w - w ρ l ρ = w 1 - ρ l ρ

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Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS

Mukesh Kumar Gandhi Solutions for Chapter: Fluids, Exercise 1: PRACTICE QUESTIONS

Author:Mukesh Kumar Gandhi

Mukesh Kumar Gandhi Physics Solutions for Exercise - Mukesh Kumar Gandhi Solutions for Chapter: Fluids, Exercise 1: PRACTICE QUESTIONS

Attempt the practice questions on Chapter 4: Fluids, Exercise 1: PRACTICE QUESTIONS with hints and solutions to strengthen your understanding. Together With Physics Class 9 solutions are prepared by Experienced Embibe Experts.

Questions from Mukesh Kumar Gandhi Solutions for Chapter: Fluids, Exercise 1: PRACTICE QUESTIONS with Hints & Solutions

MEDIUM

9th ICSE

IMPORTANT

Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 4

The volume of a balloon is $1100 m^{3}$ . It is filled with a helium of density $0.18 {kgm}^{- 3}$ . What maximum load can it lift? The density of air $1.29 {kgm}^{- 3}$ .

HARD

9th ICSE

IMPORTANT

Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 5

A solid of density $ρ$ has weight $w$ . Show that its apparent weight will be $w [\frac{1 - ρ_{l}}{ρ}]$ when it is completely immersed in a liquid of density $ρ_{l}$ .