Home Back

Calculating Centripetal Acceleration

Centripetal Acceleration Formula:

\[ a_c = \frac{v^2}{r} \]

m/s
m

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is Centripetal Acceleration?

Centripetal acceleration is the acceleration experienced by an object moving in a circular path, directed toward the center of the circle. It is a fundamental concept in circular motion physics.

2. How Does the Calculator Work?

The calculator uses the centripetal acceleration formula:

\[ a_c = \frac{v^2}{r} \]

Where:

Explanation: The formula shows that centripetal acceleration increases with the square of velocity and decreases with increasing radius.

3. Importance of Centripetal Acceleration

Details: Understanding centripetal acceleration is crucial for analyzing circular motion in various applications, from vehicle dynamics on curved roads to planetary orbits and amusement park rides.

4. Using the Calculator

Tips: Enter velocity in meters per second and radius in meters. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between centripetal and centrifugal acceleration?
A: Centripetal acceleration is the real acceleration toward the center that keeps an object in circular motion, while centrifugal force is a perceived outward force in a rotating reference frame.

Q2: Does centripetal acceleration change the speed of an object?
A: No, centripetal acceleration only changes the direction of velocity, not its magnitude. The speed remains constant in uniform circular motion.

Q3: What are some real-world examples of centripetal acceleration?
A: Examples include cars turning on curves, planets orbiting the sun, electrons moving around atomic nuclei, and clothes spinning in a washing machine.

Q4: How does radius affect centripetal acceleration?
A: For a given velocity, centripetal acceleration decreases as radius increases. Larger curves require less centripetal acceleration to maintain the same speed.

Q5: What units should I use for the calculation?
A: Use meters per second (m/s) for velocity and meters (m) for radius to get centripetal acceleration in meters per second squared (m/s²).

Calculating Centripetal Acceleration© - All Rights Reserved 2025