tion of ceiling fan increased from 3 rps to 4 rps in6.28 sec. its average angular acceleration is (a) 0.1 rad / s² (b) 10 rad/s² (s) 1 rad/s? (c) 100 rad/s?
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- A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.79 x 10^4 rad/s to an angular speed of 3.13 × 10^4 rad/s. In the process, the bit turns through 3.01 x 10^4 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 8.46 × 10^4 rad/s, starting from rest?A disk, initially rotating at 101 rad/s, is slowed down with a constant angular acceleration of magnitude 3.90 rad/s?. (a) How much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time? (a) Number Units (b) Number i UnitsA disk, initially rotating at 114 rad/s, is slowed down with a constant angular acceleration of magnitude 2.39 rad/s2. (a) How much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?
- Assume a clock mounted on the wall, what is the value of angular acceleration of the second hand of the clock on the wall ? 11 12 10 3. 765 2nrad / sec? 60 rad / sec? O rad/sec2 n rad/ sec? 4.When a fan is switched from medium to high the fan blade accelerates from 12.0rev/sec to 15.Orev/sec. During this time it rotates through 125rad. What is the fan blade's angular acceleration? O 2.32 rad/s? O 11.8 rad/s? O 13.8 rad/s? O 1.32 rad/s? O 12.8 rad/s2 O 0.324 rad/s2A disk, initially rotating at 134 rad/s, is slowed down with a constant angular acceleration of magnitude 2.94 rad/s?. (a) How much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time? (a) Number i Units (b) Number i Units
- 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 3A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.42 x 104 rad/s to an angular speed of 3.60 x 104 rad/s. In the process, the bit turns through 2.50 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.41 x 104 rad/s, starting from rest?