Advertisements
Advertisements
प्रश्न
A rubber ball floats on water with its 1/3rd volume outside water. What is the density of rubber?
Advertisements
उत्तर
Let the volume of the ball be V .
Volume of ball above the surface of water = `1/3`V
∴ Volume of ball immersed in water = `"V" - 1/3"V" = 2/3 "V"`
By the principle of floatation on,
`"Volume of rubber ball immersed"/"Total volume of rubber ball" = "Density of rubber"/"Density of water"`
or , `2/3 = "Density of rubber"/1000`
or , Density of rubber ball = `1000 xx 2/3 = 666.7 "kgm"^3 ≈ 667 "kgm"^3`
APPEARS IN
संबंधित प्रश्न
A body dipped into a liquid experiences an upthrust. State two factors on which upthrust on the body depends.
'The density of iron is 7800 kg m-3'. What do you understand by this statement?
The density of water is :
What can you say about the average density of a ship floating on water in relation to the density of water?
A hollow cylinder of copper of length 25 cm and area of cross-section 15 cm2, floats in water with 3/5 of its length inside water. Calculate:
(1) apparent density of a hollow copper cylinder.
(2) wt. of cylinder.
(3) extra force required to completely submerge it in water.
When a piece of ice floating in water melts, the level of water inside the glass remains same. Explain.
A body of mass 50 g is floting in water. What is the apparent weight of body in water? Explain your answer.
A body of mass ‘m’ is floating in a liquid of density ‘p’
what is the loss of weight of body?
An iron nail sinks in the water while an iron ship floats on water. Explain the reason.
What can you say about the average density of a ship floating on water?
