New posts in Forces

What's the physical meaning of the standard base vectors?

How does a twisted piece of string/yarn wind back on itself? What kinds of forces are responsible for this?

A bead on the wire loop

How does kinetic energy work in braking a vehicle?

Doesn't the work $W = \int F \, dx$ count only the work done by the outermost point of a spring?

Why does low tire pressure increase friction?

Is the statement that $U(x)$ is quadratic for simple harmonic motion equally strong as the statement that $F(x)$ is linear?

What force enables us to walk? Friction or normal reaction?

When a ball on a rope swings in a circle, is there both centripetal force and tension force?

How exactly is a normal force exerted, at the molecular level?