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PRESSURE AND MOMENTS
· Pressure is a measure of how much force is exerted on a given
area.
· It is about how concentrated the force is.
· Pressure is calculated by using this equation:
F
Pressure = Force P=F
Area A p A
· Pressure is measured in Newtons per square metre (N/m²) .
· Another name for Newtons per square metre is Pascals (Pa).
Pascal…read more

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PRESSURE AND MOMENTS
Decide which of the examples below show a
large pressure and which show a small
pressure.…read more

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PRESSURE AND MOMENTS
answers
Decide which of the examples below show a
large pressure and which show a small
pressure.
Large pressure.
Small pressure.
Large pressure. Large pressure.
Small pressure.
Small pressure.
There is a large pressure when the
force is concentrated on a small area.…read more

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PRESSURE AND MOMENTS
Pressure = Force p= F F
Area A
p A
Use the equation to work out the pressure produced when a man
weighing 600 N wears a pair of snowshoes with a total area of 1.5 m ².
p = F = 600 = 400 Pa
A 1.5
Don't forget to give the correct unit in your answer.…read more

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PRESSURE AND MOMENTS
Pressure = Force p=F
Area A F
Sometimes we need to re-arrange the equation to
p A
answer a question.
A box has a base with an area of 2 m².
It exerts a pressure of 300 Pa on the ground.
What is the weight of the box? Area of
base= 2 m²
F = p × A = 300 x 2 = 600 N
· Don't forget that weight is a force ­ it is the force that
gravity makes an object exert on the Earth.
· Because it's a force, weight is measured in Newtons.…read more

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Comments

lisa linsdell

Good PP Presentation that covers the whole unit, with worked examples and questions to test understanding.

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