Atmospheric-Pressure Cart
Atmospheric-Pressure Cart https://www.youtube.com/watch?v=srJG2w9ZbLM Days: 2 Mode: Pairs Take-home: Working air-pressure-powered cart
Teaching & key ideas
Key concepts: Air pressure, force, wheel/axle friction, sealing, mechanical linkages.
Hook: Demonstrate a cart moving from a pressure change rather than a motor.
Test / evidence: Cart travels repeatedly under the intended pressure mechanism.
Variables to change: Syringe diameter; wheel size; axle friction; hook geometry.
Lesson flow
Lesson plan:
Day 1: Build chassis/axles using template → rolling test
Day 2: Add pressure mechanism → test → reduce friction/spinning → distance trial
Video:
Atmospheric Pressure Powered Car
Safety / cleanup:
Needle-free syringes only; teacher handles skewers/cutting/hot glue; carts tested in marked lanes.