A top spinning at 8.5 rad/s comes to rest in 1.1s after traveling 4.68 revolutions. What...
A figure skater is spinning with an angular velocity of +13.4 rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is +5.81 rad. Determine (a) her average angular acceleration and (b) the time during which she comes to rest.
A figure skater is spinning with an angular velocity of +12 rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is +9.0 rad. (a) Determine her average angular acceleration. __rad/s2 (b) Determine the time during which she comes to rest. ___s
A disk is originally spinning about its center at 4.8 rad/s clockwise. It makes 3.6 revolutions before it is stopped. If under a constant angular acceleration, how long does it take to stop in seconds?
6) A giant Ferris wheel is spinning at 70 rad/s. It is switched off and accelerates at the rate of -10 rad/s2. How many full revolutions will it complete in 3.0 s?9) What is the total initial acceleration of a tether ball on a 2.0 m rope whose angular velocity changes from 13 rad/s to 7.0 rad/s in 15 s?12) A wheel rotates at an angular velocity of 30 rad/s. If an acceleration of 26 rad/s2 is applied to it,...
A flywheel turns through 26 rev as it slows from an angular speed of 8.5 rad/s to a stop. (a) Assuming a constant angular acceleration, find the time for it to come to rest. (b) What is its angular acceleration? (c) How much time is required for it to complete the first 13 of the 26 revolutions?
A disk is originally spinning about its center at 6 rad/s counter-clockwise. A constant angular acceleration (about its center) is applied to it and it stops spinning after 6 seconds. How many revolutions are made before it is stopped?
After 11.6 s, a spinning roulette wheel has slowed down to an angular velocity of 2.34 rad/s. During this time, the wheel has an angular acceleration of -6.26 rad/s2. Determine the angular displacement of the wheel.
A grinding wheel is spinning at a rate of 20 revolutions per second. When the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest. A) What was the angular acceleration of the grinding wheel as it came to rest? Should the angular acceleration be negative or postive and why?
At the start of a CD it is spinning at a rate of 525 rpm (revolutions per minute). Just as the CD finishes playing it is spinning at a rate of 231 rpm. While playing, the CD undergoes a constant angular acceleration of -7.93·10-3 rad/s2. Find the angle through which the CD has rotated during its playing time. (in rad) Find the playing time. (in s)
A disk is initialy at rest and a constant angular acceleration of 5 rad/s? is applied to it counter-clockwise (about its center). After 5.8 seconds, the constant angular acceleration value switches to 10 rad/s? clockwise. How many revolutions, in total, are made before the disk is stopped again?