The wheel of a car is rotating at the rate of 1200 revolutions per minute. On pressing the accelerator for 10 seconds, it starts rotating at 4500 revolutions per minute. The angular acceleration of the wheel is

Explanation

To solve the problem of finding the angular acceleration of the wheel, we can follow these steps:

### Step 1: Convert the initial and final angular speeds from revolutions per minute (rpm) to degrees per second (°/s).

1. **Initial angular speed (ω₀)**:
- Given: 1200 revolutions per minute.
- To convert to degrees per second:
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