Quiz on Buoyancy and Equilibrium

What are the two forces that act on a body immersed in a liquid at rest?

• Friction and Tension

• Weight and Buoyancy

• Acceleration and Velocity

• Heat and Light

In which case will a body sink in a liquid?

• When there is no liquid present

• When weight of the body is equal to the weight of the liquid displaced

• When weight of the body is greater than the weight of the liquid displaced

• When weight of the body is less than the weight of the liquid displaced

According to the principle of floatation, what is the relationship between the weight of floating bodies and the buoyant force?

• The weight is less than the buoyant force

• They are equal

• They are unrelated

• The weight is greater than the buoyant force

What is the condition for a body to be in neutral equilibrium?

• Weight is equal to the buoyant force

• Weight is less than the buoyant force

• Weight is zero

• Weight is greater than the buoyant force

When is a body said to be in unstable equilibrium?

• When weight is equal to the buoyant force

• When weight is less than the buoyant force

• When weight is greater than the buoyant force

• When weight is zero

What type of equilibrium is exhibited when the body returns to its original position after a slight displacement?

• Unstable equilibrium

• No equilibrium

• Stable equilibrium

• Neutral equilibrium

Where do the centre of gravity and centre of buoyancy lie for a body completely immersed in water?

• Centre of buoyancy is above centre of gravity

• Centre of gravity is above centre of buoyancy

• They coincide

• They are at different points

What is the principle that explains why objects float or sink in a liquid?

• Newton's First Law

• Archimedes' Principle

• Law of Inertia

• Ohm's Law

What happens to the buoyant force acting on an object when it is fully submerged in a liquid?

• It decreases

• It increases

• It remains the same

• It becomes zero

How does the density of an object affect its ability to float in a liquid?

• Higher density makes it float better

• Lower density makes it float better

• Density has no effect on floating

• Density determines the color of the object