Advertisements
Advertisements
Question
For a floating body, how is its weight related to the buoyant force?
Advertisements
Solution
When a body floats in a liquid. The weight of the liquid displaced by its immersed part is equal to the total weight of the body.
APPEARS IN
RELATED QUESTIONS
The S.I. unit of density is ..........
A cork piece floats on water surface while an iron nail sinks in it. Explain the reason.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?
Explain why an iron needle sinks in water, but a ship made of iron floats on water.
How is the unit bar related to the S.I. unit pascal?
Complete the following sentence :
Pressure at all points at the same depth is ....................
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
A balloon filled with helium gas floats in a big closed jar which is connected to an evacuating pump. What will be your observation, if air from the jar is pumped out? Explain your answer.
