Find the drills angular acceleration

Reference no: EM13245813

1) A dentist's drill starts from rest. After 2.70 s of constant angular acceleration it turns at a rate of 3.0 104 rev/min.

(a) Find the drill's angular acceleration.

rad/s2

(b) Determine the angle (in radians) through which the drill rotates during this period.

rad

2) A wheel has a radius of 4.2 m. How far (path length) does a point on the circumference travel if the wheel is rotated through the following angles, respectively?

(a) 21°

(b) 21 rad

Reference no: EM13245813

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