Circular Motion ApplicationsMediumQuestion 5319
Question
A stone (radius 0.5 m, 2 rev/s) has centripetal acceleration:
- A8π² m/s²Correct
- B4π² m/s²
- C2π² m/s²
- Dπ² m/s²
Correct answer
8π² m/s²
Explanation
ω = 2πf = 4π rad/s. a = rω² = 0.5 × 16π² = 8π² m/s².