Figure 1: Single-molecule experiments reveal frictional interactions between a pair of sliding F-actin filaments. These experiments reveal several notable features of sliding friction between a pair ...

1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...

Unbalanced forces are generally due to a forward force (or thrust) and a frictional force working against each other. Friction is a force that opposes motion. It is present whenever two surfaces rub ...

Frictional forces play a role in many activities – riding a bike, going bowling, and even lighting a match. When two surfaces rub together they create friction, which works to slow movement down. In ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

You’re not just imagining it, objects really are harder to shift the longer they sit there. A pair of scientists think they have discovered why. Have you ever had the impression that heavy items of ...