So the total angle that we’d put in the capstan equation is given by θ 1 + θ 2. What’s key here is that only two properties, bend angle and coefficient of static friction, will dictate just ...

It shouldn't be too surprising, then, that the equation for kinetic friction is just... the coefficient times the normal force. But that's only half the picture. What about static friction?

The second equation is the kinetic frictional force ... and how hard these two surfaces are pushed together (the normal force). The static friction case is similar for when the two surfaces ...

There are two main types of friction: static and kinetic, according to the journal The Physics Teacher. Static friction operates between two surfaces that aren't moving relative to each other ...

A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations.