Advertisements
Advertisements
Question
Give reason.
What determines whether an object floats or sinks in a fluid?
Advertisements
Solution
Whether an object floats or sinks is determined by its density. When an object is immersed into a liquid, the liquid exerts an upward force on the object. It is known as upthrust. If the weight is greater than the upthrust, it sinks. But it is less on the empty water bottle and so it floats.
APPEARS IN
RELATED QUESTIONS
Why does an object float or sink when placed on the surface of water?
Why does a block of plastic released under water come up to the surface of water?
The volume of a 500 g sealed packet is 350 cm3. Will the packet float or sink in water if the density of water is 1 g cm−3? What will be the mass of the water displaced by this packet?
Write the common unit of density.
The density of a body is 800 kg/m3. Will it sink or float when dipped in a bucket of water ? (Density of water = 1000 kg/m3).
A mug full of water appears light as long as it is under water in the bucket than when it is outside water. Why ?
A beaker full of water is suspended from a spring balance. Will the reading of the balance change if a piece of heavy metal is placed in it ?
Give reasons for your answer.
A boy get into a floating boat .
What happens to the boat ?
A rectangle wooden block has length, breadth and height of 50 cm, 25 cm and 10 cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?
Consider the following information in respect of four objects A, B, C and D :
| Object | Density(kg/m3) | Volume(m3) | Mass(kg) |
| A | 2 | 4000 | |
| B | 8000 | 4 | |
| C | 2000 | 1000 | |
| D | 4 | 2000 |
Which object would float on water ?
