## Feet Per Second Calculator (catapults)

Have you ever wanted to know the speed of your pivoting catapult? Put your catapult's information into this calculator to find out. The math is below.

Arm Length * 2 * PI = Inches Per Rotation

Arm Length * 2 * PI / 12 = Feet Per Rotation

Arm Length * 2 * PI / 12 * RPM = Feet Per Minute

Arm Length * 2 * PI / 12 * RPM / 60 = Feet Per Second (full equation)

Arm Length * 2 * PI / 12 = Feet Per Rotation

Arm Length * 2 * PI / 12 * RPM = Feet Per Minute

Arm Length * 2 * PI / 12 * RPM / 60 = Feet Per Second (full equation)