Advertisements
Advertisements
Question
State the principle of floatation.
Solution
“When a solid is floating in a fluid, the weight of whole solid acting vertically downward at its "Centre of Gravity", is equal to the weight of the fluid displaced by the "Immersed" part of solid acting upward, at its "centre of Buoyancy" or at the centre of the "Bulk of liquid" displaced.”
OR
“The weight of a floating body is equal to the weight of the liquid displaced by its "Submerged" part.”
APPEARS IN
RELATED QUESTIONS
A body is held immersed in a liquid. (i) Name the two forces acting on the body and draw a diagram to show these forces. (ii) State how the magnitudes of two forces mentioned in part (i) determine whether the body will float or sink in liquid when it is released. (iii) What is the net force on the body if it (a) sinks and (b) floats?
Draw a diagram to show the forces acting on a body floating in water with its some part submerged. Name the forces and show their points of application. How is the weight of water displaced by the floating body related to the weight of the body itself?
For a floating body, its weight W and upthrust FB on it are related as :
A body of weight W is floating in a liquid. Its apparent weight will be
Name an instrument based on this principle. State two uses of the instrument that you describe.
State the principle of floatation. What can you say about the average density of a ship floating on water?
How does an object’s density determine whether the object will sink or float in water?
State the laws of flotation.
Differentiate positive & negative buoyant.