Session 3 · Hour 1 · Force on a cut

1. Hour 1Force on a cut
2. Hour 2Pull, push, slide
3. Hour 3Strain has no unit
4. Hour 4Hooke while it springs

1. 
2. 
3. 

Force on a cut. Stress is how hard the face works.

CheckA large force on a large face may be a small stress. Draw the cut. σ=F/A. ε=ΔL/L. σ=Eε in elastic range.