Torque and Rotational

# Overview

Torque is the ability of a force to cause an object to have angular acceleration. In simpler terms, it is the rotation of an object when it is pushed or pulled.

# Equations

$\vec{\tau} = \vec{r} \otimes \vec{F} = \vert{r}\vert\vert{F}\vert sin\theta$

Converting from the linear $\vec{F} = m\vec{a}$, we get Newton’s Second Law for rotational motion: $\tau_{net} = Ia$

# Special Cases

If the force applied to an object is perpendicular to the displacement vector r, the distance to the center can be used, thus making the torque a maximum for the given force. The equation for the magnitude of a torque, arising from a perpendicular force:

$\vert{\tau}\vert = (distance to center)(\vec{F})$

# Joke

page revision: 12, last edited: 13 Apr 2009 12:47