FrictionObjectives

Investigate friction

Outcomes

(5) Carry out an investigation obtaining a full set of results.

(6) Present those results in a suitable manner.

(7) Fully analyse those results using scientific terminology and

understanding.

Key terms: friction, motion, oppose, force, Newton, meter.

FrictionNewton’s 3rd Law of Motion:Every force has an equal and

opposite force.

Outcomes

(5) Carry out an investigation obtaining a full set of results.

(6) Present those results in a suitable manner.

(7) Fully analyse those results using scientific terminology and

understanding.

Key terms: friction, motion, oppose, force, Newton, meter.

FrictionWhat is happening in this picture? Which forces are in action here? What steps are taken to reduce them?Justify the 3rd Law of Motion.

Outcomes

(5) Carry out an

investigation obtaining a full set of results.

(6) Present those results in a suitable

manner.

(7) Fully analyse

those results using

scientific terminology

and understandin

g.

Key terms: friction, motion, oppose, force, Newton, meter.

Friction1. Select a shoe to use – ideally one with laces.2. Start with a dry surface.3. Hook the Newton meter onto the shoelaces.4. Pull the shoe along the surface and record the amount of force needed in the results table.5. Change the amount of mass inside the shoe and repeat.6. Continue up to 1000g.7. Repeat the experiment for a wet or lubricated surface.8. Some of you will work quick enough to obtain 2 sets of results for each surface. In this case, you need to calculate an average result.

Outcomes

(5) Carry out an investigation

obtaining a full set of results.

(6) Present those results in a

suitable manner.

(7) Fully analyse those results using

scientific terminology and understanding.

Key terms: friction, motion, oppose, force, Newton, meter.

FrictionYou now need to plot a line graph of your results.

• Mass in grams along the bottom. • Force in Newton's up the side.• Plot the results for the 2 different

surfaces on the same graph using a different colour for each line.

• Remember to label the axis and give the graph a title.

Outcomes

(5) Carry out an investigation

obtaining a full set of results.

(6) Present those results in a

suitable manner.

(7) Fully analyse those results using

scientific terminology and understanding.

Key terms: friction, motion, oppose, force, Newton, meter.

FrictionConclusion • Were there any anomalous (dodgy

looking) results that did not fit on the line? Can you explain them?

• Which surface had the biggest friction?• What happens to the amount of friction

as the mass inside the shoe gets bigger?• Was this experiment a fair test? How did

you make it a fair test or not?• Could you improve or modify this

experiment and if so how?

Outcomes

(5) Carry out an investigation

obtaining a full set of results.

(6) Present those results in a

suitable manner.

(7) Fully analyse those results using

scientific terminology and understanding.

Key terms: friction, motion, oppose, force, Newton, meter.