1. What is the meaning of the term ‘pressure’ in terms of force and area?

2. Copy and complete this table:

 

 

 

 

 

 

3. A 480 g tin of baked beans is a cylinder with a radius of 3.2 cm. It is placed on a kitchen counter. What is the pressure on the counter caused by the tin?

4. A car of mass 1250 kg is driven on to a bridge. The pressure on the surface of the bridge when all four tyres are on the ground is 39.0 kPa. What is the contact area of one tyre on the bridge?

5. A television has a length of 124 cm, a height of 93 cm and a depth of 8.0 cm.

If it has a mass of 30 kg, what is the:

(a) Maximum pressure that the television can exert on a surface?
(b) Minimum pressure that the television can exert on a surface?

6. By measuring your weight and the area of your feet, calculate the pressure that you exert on the floor when:
(a) You are standing normally.
(b) You are standing on one foot.

7. Are you more likely to fall through an icy lake if you are on your tip toes or lying flat on your back with your arms and legs stretched out? Explain your answer.