English

A piece of metal weighs 44.5 gf in air, 39.5 gf in water. What is the R.D. of the metal?

Advertisements
Advertisements

Question

A piece of metal weighs 44.5 gf in air, 39.5 gf in water. What is the R.D. of the metal?

Short/Brief Note
Advertisements

Solution

Piece of metal weighs in air = 44.5 f
Piece of metal weighs in liquid = 39.5 f.
Loss of weight of metal in liquid = 44.5 - 39.5 = 5f.
Relative density = weight of solid in air/ loss of weight of solid in water.
Relative density of liquid =44.5f/5f =8.9
Relative density of liquid = 8.9

shaalaa.com
Determination of Relative Density of a Solid Substance by Archimedes’ Principle
  Is there an error in this question or solution?
Chapter 4: Fluids - Exercise 3 [Page 178]

APPEARS IN

Frank Physics Part 1 [English] Class 9 ICSE
Chapter 4 Fluids
Exercise 3 | Q 36 | Page 178

RELATED QUESTIONS

A solid of density 5000 kg m-3 weighs 0.5 kgf in air. It is completely immersed in water of density 1000 kg m-3. Calculate the apparent weight of the solid in water. 


How are the (i) Mass, (ii) Volume and (iii) Density of a metallic piece affected, if at all, with an increase in temperature?


What do you understand by the term relative density of a substance?


Relative density of a substance is expressed by comparing the density of that substance with the density of : 


The unit of relative density is : 


A piece of stone of mass 15.1 g is first immersed in a liquid and it weighs 10.9 gf. Then on immersing the piece of stone in water, it weighs 9.7 gf. Calculate:

  1. The weight of the piece of stone in air,
  2. The volume of the piece of stone,
  3. The relative density of stone,
  4. The relative density of the liquid.

A body weighs 20 gf in air and 18.0 gf in water. Calculate the relative density of the material of the body. 


A body of mass 70 kg, when completely immersed in water, displaces 20,000 cm3 of water. Find: (i) The weight of body in water and (ii) The relative density of material of the body. 


A stone of density 3000 kgm3 is lying submerged in water of density 1000 kgm3. If the mass of stone in air is 150 kg, calculate the force required to lift the stone. [g = 10 ms2]


A glass cylinder of length 12 x 10-2 m and area of cross­section 5 x 10-4 m2 has a density of 2500 kgm-3. It is immersed in a liquid of density 1500 kgm-3, such that 3/8. of its length is above the liquid. Find the apparent weight of glass cylinder in newtons.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×