It is quite common to see a part of an apple or an orange rocking on a table. This every-day situation offers a good opportunity to introduce or reinforce important concepts of mechanics, such as angular momentum, center of gravity and ...

This experiment is said to be 'invented' by a Canadian magician. And it keeps causing a WOW effect, even if you already know the physics involved! Beyond the entertainment, it is an instructive puzzle for students to figure out which forces are ...

Newton't first law of inertia also applies to rotations – and comes in handy when balancing a stick on a fingertip.