A dentist's drill starts from rest.after 3.20 s of constant angular acceleration ,it turns at a rate of 2.51x10⁴ rev/min.find the drills angular acceleration
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Angular acceleration is Aa
Angular velocity is Va
Time is T
F = rev/s
F = 2.51 * 10000 * 1/60
F = 418.34
Va = 2 * pi * F
Va = 2 * 3.14 * 418.34
Va = 2628
Va [final] = Va [initial] + Aa * T
2628 = 0 + Aa * 3.2
Aa = 2628/3.2 = 821.5 rad/s
Angular velocity is Va
Time is T
F = rev/s
F = 2.51 * 10000 * 1/60
F = 418.34
Va = 2 * pi * F
Va = 2 * 3.14 * 418.34
Va = 2628
Va [final] = Va [initial] + Aa * T
2628 = 0 + Aa * 3.2
Aa = 2628/3.2 = 821.5 rad/s
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