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

Options

(a) 20 rad/sec²
(b) 1880 degree/sec²
(c) 40 rad/sec²
(d) 1980 degree/sec²

Correct Answer:

1980 degree/sec²

Explanation:

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