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
Fill one (the tractor) with a few stones.
Fill the other (the load) with a lot.
Connect the containers underneath with masking tape.
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.
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
Try it with two matching containers. Fill one (the tractor) with a few stones. Fill the other (the load) with a lot. Connect the containers underneath with masking tape. Put your finger low on the back of the “tractor” to act as the wheels, and nudge it forward. With a low draw bar, a heavy load doesn’t tip it.
Move the tape from beneath the tractor to its top edge. Nudge it forward in the same place. Its front tips up!
