How can a horde of active robots be automatically brought to a standstill? By arresting their dynamics in a self-sustained ...

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 ...

This must mean that the static friction force is now 1.5 Newtons. So the static frictional force exerts whatever force it has to keep the two surfaces from sliding.

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 ...

This just means that the static frictional force cannot be more than the right side of the expression—but it can be less. Finally, the two other values are μ s (the coefficient of static ...

Robots acting as macroscale analogs of active nanoparticles stop moving through friction alone, revealing a self-sustained ...

Friction is responsible for about twenty percent of the world energy consumption. The main reason for this is that frictional forces slow down the motion of surfaces in contact: think of the ...

Friction is a type of force, or a "push" or a "pull," that can act on objects. In physics the frictional force between two surfaces is determined by something called the coefficient of friction.

Although the static friction was greater than the sliding friction for all the liquids tested, the forces differed considerably in magnitude. For example, a water droplet only begins to move under a ...