Can you construct a knight's tour on a 8x8 board. Note that the problem is solvable, and somewhat hard. Try to solve the problem. For an interesting discussion, see https://en.wikipedia.org/wiki/Knight%27s_tour
What is torque? Rank the figures below with amount of torque in each
Lets try to balance certain weights
On each set of balances, place the weights so that each beam is balanced around its fulcrum by the torque. Note that we are adding balloons now, which pull the beam upwards. Treat them like negative weights
Homework Problem:
Big Challenge Puzzle - Note that there is no fixed point here. Thus the balancing has to happen up and down!