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- 1. The blades of a fan running at low speed turn at 300 rpm. When the fan is switched to high speed, the rotation rate increases uniformly to 430 rpm in 5.30 s. What is the magnitude of the angular acceleration of the blades? rad/s2 f60 ssi f60 0 ssro05. A wheel is rotating with an angular speed of w(t) = t² + 2 (rad/s). What is the tangential acceleration of a point 1.0 m from the axis of rotation at time t = 1.0 s?Jimmothy has a flywheel. It rotates about its central axis. It starts from rest and accelerates uniformly. After completing 100 revolutions, the flywheel reaches an angular speed of 70.9 rad/s. It's your job to calculate the following: 1. What is The angular acceleration of the flywheel 2. What is The time required to complete the first 50 revolutions. 3. What is The time required to complete the second 50 revolutions.
- 2. A wheel of radius 20 cm is initially rotating at 12 rpm. It then speeds up at a constant rate, reaching a speed of 35 rpm after 3.1 seconds. a) What is the angular acceleration of the disk? b) How much does it rotate (in radians) while it is accelerating from 12 to 35 rpm?" c) What is total acceleration (in m/s?) of a point on the edge of the disk at the moment it has just started accelerating?|2. A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.35 × 104 rad/s to an angular speed of 3.65 × 10¹ rad/s. In the process, the bit turns through 1.92 × 10¹ rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 7.70 × rad/s, starting from rest? S ssfot €60 s OSISS ƒ60 31. A baseball pitcher brings his arm forward during a pitch, rotating the forearm about the elbow. If the velocity of the ball in the pitcher's hand is 31 m/s and the pitcher's forearm is 0.3 m long, what is the angular velocity of the forearm? Hint: Drawing a small cartoon could be helpful. rad/s @=