Understanding Pressure in Solids

The video tutorial by Ibu Anita introduces the concept of pressure, focusing on solid pressure. It begins with an overview of hydraulic pumps and their use of pressure principles. The tutorial then delves into the mathematical explanation of pressure, highlighting the relationship between force and area. Real-life examples, such as boots versus high heels and the walking ability of ducks versus chickens, are used to illustrate these concepts. The video concludes with practical applications and practice problems to reinforce understanding.

What principle allows hydraulic pumps to lift heavy vehicles?

• Principle of buoyancy

• Principle of gravity

• Principle of leverage

• Principle of pressure

Why is it easier to walk on muddy ground with boots rather than high heels?

• Boots are heavier

• Boots are more fashionable

• Boots are waterproof

• Boots have a larger surface area

How do ducks manage to walk easily on muddy surfaces?

• They have strong legs

• They have a special walking technique

• They are lighter than chickens

• They have webbed feet

What is the formula for calculating pressure?

• P = F * A

• P = F / A

• P = A / F

• P = A * F

Why does a sharp pencil tip hurt more than a blunt one when pressed against the skin?

• The sharp tip has a smaller surface area

• The sharp tip is heavier

• The sharp tip is made of a different material

• The sharp tip is longer

What happens to pressure when the force applied increases?

• Pressure increases

• Pressure becomes zero

• Pressure remains the same

• Pressure decreases

Why are the edges of tools like axes and knives made sharp?

• To reduce weight

• To improve grip

• To make them look better

• To increase pressure

How does the design of a duck's foot help it in muddy areas?

• It increases pressure

• It improves speed

• It reduces weight

• It decreases pressure

What is the pressure exerted by a force of 10 N on an area of 0.005 m²?

• 1000 N/m²

• 500 N/m²

• 2000 N/m²

• 1500 N/m²

If a force of 500 N is applied on a 10 m² area, what is the resulting pressure?

• 500 N/m²

• 5 N/m²

• 100 N/m²

• 50 N/m²