A wedge-shaped doorstop is most effective when it sits tightly under the door.

Question Text#

What does forcing the wedge into a tight fit accomplish?

Answer Section#

  • Doing so increases the coefficient of friction.

  • Doing so increases the force of static friction between the wedge and the floor

  • Doing so causes the friction to become kinetic friction instead of static friction.

  • Ghosts. It keeps ghosts from pushing the door shut.


Problem is licensed under the CC-BY-NC-SA 4.0 license.
The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.