Buoyant Force and Apparent Weight

The video tutorial covers Archimedes' principle, focusing on solving three key questions related to weight, buoyant force, and apparent weight. The first question involves calculating the loss in weight and buoyant force of an object immersed in liquid. The second question explains the concept of apparent weight for a floating body, demonstrating that it is zero. The third question involves finding the volume and apparent weight of a body fully immersed in water. The video concludes with references to additional resources and encourages viewers to engage with the content.

What is the main focus of the video tutorial?

• Newton's Laws of Motion

• Archimedes' Principle

• Pythagorean Theorem

• Law of Conservation of Energy

If an object weighs 200 gram force in air and 170 gram force in a liquid, what is the buoyant force acting on it?

• 50 gram force

• 30 gram force

• 70 gram force

• 20 gram force

How do you calculate the loss in weight of an object when immersed in a liquid?

• Apparent weight minus real weight

• Real weight minus apparent weight

• Sum of real and apparent weight

• Product of real and apparent weight

What is the apparent weight of a floating body?

• Equal to its real weight

• Zero

• Twice its real weight

• Half its real weight

Why does a floating body have zero apparent weight?

• Because it is heavier than the liquid

• Because the upward force equals the real weight

• Because it is lighter than the liquid

• Because it is denser than the liquid

A body of mass 5 kg displaces 1000 cm³ of water. What is the volume of the body?

• 500 cm³

• 2000 cm³

• 1000 cm³

• 1500 cm³

How do you calculate the apparent weight of a body in water?

• Real weight times upward force

• Upward force minus real weight

• Real weight minus upward force

• Real weight plus upward force

What is the real weight of a 5 kg body in air if the acceleration due to gravity is 10 m/s²?

• 100 Newton

• 50 Newton

• 20 Newton

• 10 Newton

What is the density of water assumed in the calculations?

• 0.5 gram/cm³

• 1 gram/cm³

• 1.5 gram/cm³

• 2 gram/cm³

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