Centripetal Acceleration
### Formula:
$$a_c = \frac{v^2}{r}$$
### Terminologies:
- a_c → Centripetal acceleration; acceleration directed towards the centre of circular path.
- v → Linear velocity.
- r → Radius of circular path.
### Usage:
- Used to calculate acceleration required for circular motion.
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### Formula:
$$a_c = r\omega^2$$
### Terminologies:
- a_c → Centripetal acceleration.
- r → Radius of circular path.
- ω → Angular velocity.
- ω² → Square of angular velocity.
### Usage:
- Used when angular velocity is given instead of linear velocity.