Mon Prof Augmenté
Short Jaws, Stronger Crush
Two open pliers sit on a bench. The short pliers crack a walnut, while the long pliers leave a same-sized walnut whole.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 13, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
Age 12: open this week
Browse Age 12
In the picture
- Badge 1 sits on the cracked walnut held between the short pliers' jaw tips.
- Badge 2 sits on the pivot of the short pliers.
- Badge 3 sits on the whole walnut held between the long pliers' jaw tips.
- Badge 4 sits on the hanging weight at the end of the long pliers' handle.
Examples
- A nutcracker
- A pair of pliers
Key takeaways
- A shorter jaw shortens the load arm at the bite, so the same pull makes more force.
- A longer jaw spreads the same pull over a longer arm, so the tip pushes with less force.
Carry on in the app
Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Get the app
Free app, optional subscription
App Store Google Play
