In 1932, Albert Dremel of Racine, Wisconsin, created his rotary tool that has come to be known as a dremel. Suppose a dremel starts from rest and achieves an operating speed of 32,000 rev/min. If it requires 1.30 s for the tool to reach operating speed and it is held at that speed for 49.0 s, how many revolutions 0 has the bit made? What is the average angular acceleration @1,z for the start-up period? Full-scre 0 = rev 01.z = rad/s2 Suppose it requires another 8.20 s for the tool to return to rest. What is the average angular acceleration