1K10.20 Big Slipping Ladder (Big Ladder Against a Wall)

Concepts

Torque, friction

Overview

A ladder leans against a wall on the verge of slipping. A person can climb the ladder almost up to the halfway point without falling over.

Details

Equipment

  • [1] Ladder
  • [1] Rope or twine
  • [1] Pole

Classroom Assembly

  1. Tie up the ladder so the A-frame cannot open up.
  2. Lean the ladder against the wall.

Important Notes

  • Do not go too close to the halfway point of the ladder. You could fall and hurt yourself.

Script

  1. Find the angle at which the ladder starts to slip.
  2. Climb, going up from the lowest rung. Use the pole for support in case you lose balance.
  3. Get off before you reach the middle of the ladder.

 

Additional Resources

References

  • PIRA 1K10.20

Disclaimer

  • Don't attempt this at home!

Last revised

  • 2019

Technicals

Related AV

Related demos

 

If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.