Force, Pressure, Density for 3-2/3-3

How do you Calculate Pressure

• Force(N)/Area(m²)

• Force(kg)/Area(mi²)

• Area(m²)/Force(N)

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.

Watch the tyres of tractor rolling. Rear tyres are broader because

• It looks good.

• Broader tyres lessen the muscular Force required.

• Broader tyres lessen the pressure on ground.

• Broader tyres lessen the friction on ground.

Which of these animals would probably cause the greatest pressure on the ground?

• A fat cow with big feet
• A fat cow with small feet
•  A calf with big feet
• A calf with small feet

Which of the statements is true?

• The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.
• The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.
• The bottom of the shoe exerts the same pressure as the bottom of the boot.

A spring balance is used for measuring

• Mass

• Weight

• Pressure

• Speed

Leaves fall down on the ground due to

• Electrostatic force

• Magnetic force

• Gravitational force

• Muscular force

_____ is the amount of substance of an object.

• Mass

• Weight

• Density

• Volume

_____ may change depending on the location.

• Mass

• Weight

• Density

• Volume

The mass of a box is 100 kg.

If g = 10 N/kg, the weight of the box is _____.

• 10 N

• 100 N

• 1000 N

• 10000 N