Simple Machines
📋 What it is
Simple machines (lever, pulley, ramp, wheel) make work easier by trading force for distance.
🗣️ Coach says
A simple machine doesn’t give you free power — it trades. A ramp lets you lift a heavy box with less force, but you push it a longer way. A lever lets a small push move a big load. Machines change HOW you apply force, making hard jobs doable.
🧠 Memory hook
Machines trade force for distance — less force, but over a longer path.
😂 Giggle
Why did the ball roll down the ramp without complaining?
It just went with the gravity flow!
😲 Whoa!
The ancient pyramids were likely built using ramps and levers — simple machines that let humans move blocks weighing several tonnes.
✅ Quick check: A ramp lets you move a heavy box with less force. What’s the trade-off?
Say your answer out loud first — then reveal.
You push it over a LONGER distance — the machine trades reduced force for extra distance.
Simple machines conserve work: less force means more distance.
🧪 Try it! (2 minutes)
Prop a book as a ramp and slide a heavier object up it vs lifting it straight. The ramp feels easier.