Mechanics Pressure

Question 1

Define pressure

Answer 1

The force applied over a given area

Question 2

What units is pressure measured in?

Answer 2

Pascals - Pa

Question 3

What is the formula for pressure?

Answer 3

P = F/A  
Pressure = Force/Area

Question 4

Describe ways of making pressure smaller

Answer 4

Make the force smaller

Increase the surface area the force is being applied over

Question 5

Describe ways of making the pressure greater

Answer 5

Increase the force

Reduce the surface area the force is being applied over

Question 6

If the pressure is increased and the surface area kept constant, describe what happens to the force

Answer 6

It increases

Question 7

How do you calculate area?

Answer 7

Area = length x width

Question 8

What are the units for area?

Answer 8

m2

Question 9

Explain what a mountain biker could do to increase their grip in muddy conditions

Answer 9

Their weight force cannot change but if they reduce the pressure in the tyres, this increases the surface area of the tyres and gives them more grip