New GCSE AQA Physics lesson on 'Moments, Gear and Equilibrium' written in line with new AQA Physics specification.
ALL ANSWERS TO QUESTIONS INCLUDED IN POWERPOINT
Starter poses the common question of how easy is it to open a door close to the hinge point which makes a very fun class demo and nicely leads into the lesson on moments,
A variety of simple devices that make use of levers is shown to identify what they all have in common which highlight they all produce a great turning effect/force.
Two experiments are provided to investigate either applied force and turning effect or distance from pivot and turning effect. This helps pupils identify the two contributing factors to moments and therefore the equation. A series of question practice use of the the moment equation.
Balanced moments and equilibrium is explained in relation to a see-saw and then explained with the equation allowing for review question to be completed. An exam question is provided also.
Further a small section on gears is included to relate the principles of moments to gears. Firstly pulleys are shown to make it more easily related to moments which is then directly shown with gears. The use of high gears and low gears with vehicles is explained. (I will revisit this aspect to integrate firmly into the main lesson).
Lesson Objectives:
- Define what is meant by a ‘moment’ and its units.
- Resolve simple moment problems with the moment equation.
- Explain how moments can be increased and how they can be useful.
- Apply the principle of moments to gears and their uses.
- Resolve moments in equilibrium.
ALL ANSWERS TO QUESTIONS INCLUDED IN POWERPOINT
Starter poses the common question of how easy is it to open a door close to the hinge point which makes a very fun class demo and nicely leads into the lesson on moments,
A variety of simple devices that make use of levers is shown to identify what they all have in common which highlight they all produce a great turning effect/force.
Two experiments are provided to investigate either applied force and turning effect or distance from pivot and turning effect. This helps pupils identify the two contributing factors to moments and therefore the equation. A series of question practice use of the the moment equation.
Balanced moments and equilibrium is explained in relation to a see-saw and then explained with the equation allowing for review question to be completed. An exam question is provided also.
Further a small section on gears is included to relate the principles of moments to gears. Firstly pulleys are shown to make it more easily related to moments which is then directly shown with gears. The use of high gears and low gears with vehicles is explained. (I will revisit this aspect to integrate firmly into the main lesson).
Lesson Objectives:
- Define what is meant by a ‘moment’ and its units.
- Resolve simple moment problems with the moment equation.
- Explain how moments can be increased and how they can be useful.
- Apply the principle of moments to gears and their uses.
- Resolve moments in equilibrium.
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