Problem 81P

A popular make of dental drill can operate at a speed of 42, 500 rpm while producing a torque of 3.68 oz · in. What is the power output of this drill? Give your answer in watts.

Solution 81P

Step 1 of 1

We have to find the power output of dental drill in watts.

The power output of the drill can be found using the expression,

where,

torque in Nm

angular speed in rad/s

Now,

and

Hence, the power output is

Therefore, the power output of the dental drill is 116 W.