A dentist's drill starts from rest. After 2.60 s of constant angular acceleration it turns at a rate of 2.7 10^{4} rev/min.

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DATA:

T= 2.60s

Angular speed= 2.7*10^{4} rev/min = 1.62*10^{6} rev/s

Angular acceleration=?

Angle=?

SOLUTION:

Angular acceleration= angular speed/time

= 1.62*10^{6}/2.60

= 6.2307*10^{5}rad/s

Angular speed= angle/time

Angle = angular speed*time

= 1.62*10^{6}*2.60

= 4.2120*10^{6}

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