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October 31, 2014

Homework Help: Physics(Please help)

Posted by Hannah on Thursday, June 7, 2012 at 4:57pm.

A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.44 x 104 rad/s to an angular speed of 5.05 x 104 rad/s. In the process, the bit turns through 1.77 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 8.95 x 104 rad/s, starting from rest?

Do I start by subtracting the two angular speeds?

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