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slug Created with Sketch. Experiment Tractor Pull

Tractor Pull

A farmer uses the tractor’s low draw bar to pull a heavy load. Hooking a load higher on a tractor can make the vehicle tip or even flip.

What You’ll Need
  • two matching containers
  • stones
  • masking tape
What to Do
  1. Fill one (the tractor) with a few stones.
  2. Fill the other (the load) with a lot.
  3. Connect the containers underneath with masking tape.
  4. Put your finger low on the back of the “tractor” to act as the wheels, and nudge it forward. With a low drawbar, a heavy load doesn’t tip it.
  5. Move the tape from beneath the tractor to its top edge. Nudge it forward in the same place. Its front tips up!
How It Works

Art by: Robert L. Prince

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