Trading force and distance
Physics Narrative for 11-14
A bottle opener
With the bottle opener you:
push down with a small force (your effort) … through a large distance.
This results in:
a large upward force of the lever on the cap … acting through a small distance.
The whole point of the bottle opener is to produce a big force from a small force, but the drawback is that you must push through a big distance. Devices such as this are sometimes called force multipliers.