P2.3.5 - Pressure on Solids

Question 1

How can we calculate are using the pressure equation?

Answer 1

Area = Force ÷ Pressure

Question 2

How do we calculate pressure?

Answer 2

Pressure = Force ÷ Area

Question 3

What are the units of pressure?

Answer 3

Newton per metres squared (N/m²)

or

Newtons per centimetres squared (N/cm²)

Question 4

If your decrease the area that a force is acting over you will ______ the pressure.

Answer 4

If your decrease the area that a force is acting over you will increase the pressure.

Question 5

Define pressure.

Answer 5

When a force acts over an area.

Question 6

When you stand on a surface you exert a ______ on the surface.

Answer 6

pressure

Question 7

How can we calculate force using the pressure equation?

Answer 7

Force = Pressure x Area

Question 8

If you increase the area that a force is acting over you will ______ the pressure.

Answer 8

If your increase the area that a force is acting over you will decrease the pressure.

Question 9

What is the force that is acting on the ground where you stand?

Answer 9

Your weight

Question 10

A hydraulic jack is a machine that is used to lift cars. See diagram below. Describe and explain what would happen if there were bubbles of air in the oil.

Answer 10

• The output cylinder under the car would not move up
• Because when you press the handle you compress the oil
• So the air bubbles would be compressed and the force would not be transmitted