A) A dentist's drill turns a 0.75 mm diameter bit at 5.0 x 10^5 rev/min. What is the linear speed of the cutting edge? B) When the drill is first turned on it takes about ¼ of a second to come up to full speed. What is the average angular acceleration of the bit?
I believe the answer is A) 20 m/s and B) 2.1 x 10^5 rad/s^2. I need to see each step and formula to solve this question.
The solutions show the full formulas in solving the problems.