Physics
Centripetal Force
Calculate the force required for circular motion.
F = mv² / r
Formula Explanation
Centripetal force keeps an object moving in a circle.
Variables Explained
m = mass; v = speed; r = radius.
Solved Example
A 2 kg object moves at 5 m/s in a circle of radius 2 m. Find force.
F = (2 × 25) / 2 = 25 N.