Physics 5
Pressure and Moments
C/W
Pressure
18-Mar-16
Aims:- 4 describe pressure
5 explain pressure in a liquid or gas
6 calculate pressure
FT
Copy note then do …
• Pressure is how spread-out a force is
Complete worksheet then …
Draw a design for either:
• a stiletto with a low pressure heel
• a football boot with high pressure studs
IT
Copy note then do …
• Pressure is how spread-out a force is
Complete worksheet
IT
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• Pressure in a liquid is caused by the
weight of the liquid on top
Watch demo – draw it, label it and
explain what you see
IT
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• Pressure in a gas is caused by the gas
particles hitting the sides of the
container
Answer questions a,b and 1 on pages
36-37
HT
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• Pressure is how spread-out a force is
Pressure
N/m2
=
Force
N
Now complete worksheet
÷
Area
m2
HT
Copy note then do …
• Pressure in a liquid is caused by the
weight of the liquid on top
• Pressure is the same throughout the
liquid
Copy hydraulic example diagram and
calculation p34
Attempt worksheet
HT
Copy note then do …
• Pressure in a gas is caused by the gas
particles hitting the sides of the
container
Answer questions a,b and 1,3 on
pages 36-37
Are You On Target Today?
Aims:4 describe pressure
5 explain pressure in a liquid or gas
6 calculate pressure
C/W
Moments
18-Mar-16
Aims:- 4 describe what a moment is
5 explain balanced moments
6 calculate balancing moments
FT
Copy note then do …
• A ‘moment’ is the turning effect of a
force
Complete Worksheet 1 (levers)
Complete Worksheet 2 (see-saws)
IT
Copy note then do …
• A ‘moment’ is the turning effect of a
force
Complete Worksheet 1 (levers)
IT
Copy note then do …
• Moments are calculated using:-
Moment
Nm
=
Force
N
x
Distance
m
Complete Worksheet 2 (balanced
moments)
HT
Copy note then do …
• A ‘moment’ is the turning effect of a
force
Complete Worksheet 1 (levers)
HT
Copy note then do …
• Moments are calculated using:-
Moment
Nm
=
Force
N
x
Distance
m
Complete Worksheet 2 (balanced
moments)
HT
Copy note then do …
• To find a balancing moment …
Distance
m
=
Moment ÷
Nm
Force
N
Force
N
=
Moment ÷ Distance
Nm
m
Now do worksheet 3 (balancing moments)
Are You On Target Today?
Aims:4 describe what a moment is
5 explain balanced moments
6 calculate balancing moments