Pressure on solids

How do you Calculate Pressure

• Force(N)/Area(m²)

• Force(kg)/Area(mi²)

• Area(m²)/Force(N)

If an object's surface area is smaller does it create more or less pressure?

• More

• Less

• The same

What is pressure?

• The amount of force exerted on a surface

• The surface area of an object

• The weight of an object

A person weighs 700N and their feet have a surface area of 0.1m². How much pressure is exerted?

• 7000N/m²

• 70N/cm²

• 100N/m²

If you're walking in snow why would you wear boots instead of high heels?

• Because boots have a higher surface area making the pressure less and stopping you from sinking.

• Because it's more comfortable

• No, high heels are better

What does N/m² mean?

• Newtons per squared metre

• Kilograms per squared mile

• Squared metres per newton

How do you turn Ncm² to Nm²?

• Divide by 100

• Divide by 10

• Times by 100

Why won't you sink in mud if you wear boots?

• Because the surface area is larger creating less pressure.

• Has air in it to keep you floating.

• Because the mud won't want you.

Why do you wear studs on grass?

• Because the studs create more pressure allowing it to grip into the grass.

• Stylish

• Creates friction

State the direction at which pressure acts?

• 420^o

• 180^o

• 90^o