demonstrations:the_tablecloth_trick

The Tablecloth Trick

Materials: ★☆☆ Easy to get from supermarket or hardware store
Difficulty: ★★☆ Can be done by science teachers
Safety: ★★☆ Some safety precautions required to perform safely

Categories: Motion

Alternative titles: Newton’s First Law Tablecloth Demonstration, Inertia Tablecloth Pull

Summary

A tablecloth is pulled quickly from under cups and plates, leaving them in place.

Procedure

  1. Prepare an old tablecloth by cutting off the seam or hem so it will slide smoothly.
  2. Lay the tablecloth flat on a table.
  3. Place a plate and a few cups of water on top of the cloth. (Start with plastic dishes before trying glass.)
  4. Stand back, grip the tablecloth near the edge, and pull straight down and fast.
  5. Observe how the dishes remain in place while the tablecloth slides out.

Tablecloth Demonstration - The Physics Classroom:


Demonstrating inertia with a table cloth Science Minute:


📄 The Tablecloth Trick - She Loves Science: https://shelovesscience.com/the-tablecloth-trick/

📄 Tablecloth Whip-off Trick - Steve Spangler: https://stevespangler.com/experiments/tablecloth-science-trick/

Variations

  • Use different types of tablecloths (thick, thin, slippery) to compare effects.
  • Increase the weight of the objects on top (adding books, heavier cups).
  • Try pulling the cloth slowly vs. quickly to observe differences in friction and inertia.

Safety Precautions

  • Start with plastic dishes and cups of water to prevent breakage and spills.
  • If using glassware, ensure adult supervision and keep towels ready for cleanup.
  • Perform on a stable, flat table to reduce accidents.

Questions to Consider

  • Why do the cups and plates stay in place when the tablecloth is pulled quickly?
  • What happens if you pull the tablecloth slowly instead of fast?
  • How does friction play a role in this demonstration?
  • How is this similar to the Egg Drop Inertia Challenge?