Force and Pressure (2nd)

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

Fluids can also include__ and__. 

• solids and liquids
• solids and gases
• liquids and gases
• liquids

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.

What does pressure measure?

• Strength
• Force exerted on a given area of surface

What is a force that works AGAINST MOTION?

• Force
• Motion
• Gravity
• Friction

Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.

• True
• False

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• 40 N/cm²
• 100 N/cm²
• 400 N/cm²
• 10 N/cm²

A brick is kept in three different ways on a table as shown in Fig. The pressure exerted by the brick on the table will be

• maximum in position A

• maximum in position B

• maximum in position C

• equal in all cases.

which force is non contact force

• gravitational

• magnetic

• electrostatic

• all of the above

Watch the green man. Which force(s) are acting in this situation?

• Frictional Force only.

• Gravitational Force only.

• Muscular Force only.

• Muscular and Gravitational Force.