Advertisements
Advertisements
Question
Why is a force needed to keep a block of wood inside water?
Solution
Upthrust due to water on block when fully submerged is more than its weight. Density of water is more than the density of cork; hence, upthrust due to water on the block of cork when fully submerged in water is more than its weight.
APPEARS IN
RELATED QUESTIONS
The density of a body which sinks in water is ......... than 1000 Kg m-3.
Explain the meaning of the statement
‘Relative density of aluminium is 2.7’.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body C having density 1100 kg m-3
Explain the following statement:
It is easier to cut with a sharp knife than with a blunt one.
State three factors on which the pressure at a point in a liquid depends.
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
The S.I. unit of upthrust is :
Two identical pieces, one of ice (density = 900kg per meter cube) and other wood (density = 300kg per meter cube) float on water.
- Which of the two will have more volume submerged inside water
- Which of two will experience more upthrust due to water.
Select the correct option.
Thrust acting perpendicularly on the unit surface area is called
How is thrust different from pressure?
