Basic idea of torque - leverage. Pivot systems. Definition of torque in terms of = Force x distance …Frictional torque?
Experiments/demos
Wrenches? How easy is it to undo a bolt with a short wrench vs. a long wrench.
Can calculate how much torque one wrench has vs. another?
Lifting levers - build them.
Wheels! [?]
Draw diagrams of force and torque…?
Each group given a weight, have to do calculations then build the thing? Very simple design challenge.
OR build a trigger for the spring guns? Have that be the next thing? Figure out how much we need to resist force? ←- does this experiment make sense.
Discussion
I mentioned this somewhere else before, I think, but trying to open a door by pushing near the hinges vs. near the other side, is a good demonstration of how the distance is important