How to Calculate Centripetal Force
What is Centripetal Force?
Centripetal force is the net force directing an object toward the center of circular motion. Without it, objects move in straight lines; it's essential for understanding circular motion.
Formula
F = m × v² / r = m × ω² × r
Step-by-Step Guide
- 1Enter mass, velocity, and radius of circular path
- 2Calculate using either velocity or angular velocity form
- 3Result is the required centripetal force
Worked Examples
Input
m = 2 kg, v = 5 m/s, r = 1 m
Result
F = 50 N
2 × 25 / 1 = 50
Common Mistakes to Avoid
- ✕Confusing centripetal with centrifugal (fictitious)
- ✕Wrong radius measurement
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