Advertisements
Advertisements
प्रश्न
What is the law of floatation?
Advertisements
उत्तर
A body will float in a liquid if the weight of the body is equal to the weight of the liquid displaced by it.
Key Points:
-
Buoyant Force:
- When a body is partially or fully submerged in a liquid, it experiences an upward force called the buoyant force.
-
Condition for Floating:
- For a body to float, the buoyant force must equal the weight of the body.
- This happens when the density of the body is less than or equal to the density of the liquid.
-
Stable Floating:
- In equilibrium, the body displaces an amount of liquid whose weight is exactly equal to its own weight.
APPEARS IN
संबंधित प्रश्न
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
Differentiate between thrust and pressure.
Why is the tip of an allpin made sharp?
A tall vertical cylinder filled with water is kept on a horizontal table top. Two small holes A and B are made on the wall of the cylinder, A near the middle and B just Below the free surface of water. State and explain your observation.
Complete the following sentence :
Pressure at a point inside the liquid is ...................... To its depth.
Describe an experiment to show that a body immersed in a liquid appears lighter than it really is.
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
Select the correct option.
Unit of thrust in the SI system is
Calculate the hydrostatic pressure exerted by water at the bottom of a beaker. Take the depth of water as 40 cm, the density of water 1000 kgm−3 and g = 9.8 ms−2.
A body will sink if the weight of the body is greater than the buoyant force.
