Correct Answer: Option A

Explanation

Given:
- \( d = 70 \, \text{cm} \)
- \( D = 350 \, \text{cm} \)
- \( t = 2 \, \text{s} \)

Circumference: \(C = \pi d \approx 219.91 \, \text{cm}\)

Rotations:  \(\text{Rotations} = \frac{D}{C} \approx 1.59\)

Radians: \(\text{Total radians} = 1.59 \times 2\pi \approx 9.98\)

Angular Velocity: \(\omega = \frac{9.98}{2} \approx 4.99 \, \text{radians per second}\)

 \( \omega \approx 4.99 \, \text{rad/s} \) ≈ 5 rads

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