Advertisements
Advertisements
Question
Define buoyant force. Name two factors on which buoyant force depends.
Solution
The upward force exerted by a liquid on a body when immersed in a liquid is known as buoyant force. The buoyant force depends on the following factors:
(i) Size or volume of the body immersed in a liquid.
(ii) The density of the liquid in which the body is immersed.
APPEARS IN
RELATED QUESTIONS
The S.I. unit of density is ..........
What is a density bottle? How is it used to find the density of a liquid?
Write an expression for the pressure at a point inside a liquid. Explain the meaning of the symbols used.
The pressure inside a liquid of density p at a depth h is :
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
How is the upthrust related to the volume of the body submerged in a liquid?
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
Select the correct option.
Unit of thrust in the SI system is
The blood pressure reading of a patient is recorded 160/100. Express the lower pressure in SI units.
[Take density of mercury as 13.6 × 103 kgm−3 and the value of ‘g’ as 10 ms−2]