Session 3 · Hour 1 · A push.

1. Hour 1A push.
2. Hour 2Hour two. A face that feels nothing.
3. Hour 3Hour three. Name the fold.
4. Hour 4Hour four. Push and turn on one page.

CheckCast iron. Short coupon. Push. Then a plate. Three-point. Name which face is in tension. m = 1 is a perfect spring. Most metals are not.