1. A flywheel is initially rotating at 30 rad/s and has aconstant angular acceleration. After 8.0 s it has rotated through460 rad. Its angular acceleration in rad/s is:
2.Ten seconds after an electric fan is turned on, the fanrotates at 6000 rev/min. Its average angular acceleration inrad/s2 is:
3.The rotational inertia of a disk about its axis is 0.70kgˑm2. When a 2.0-kg weight is added to its rim, 0.50 mfrom the axis, the rotational inertia in kgˑm2becomes:
4.A disk with a rotational inertia of 5.0 kgˑm2 and aradius of 0.25 m rotates on a frictionless fixed axis perpendicularto the disk and through its center. A force of 8.0 N is appliedalong
the rim. The angular acceleration of the disk in rad/s2is:
5.A disk has a rotational inertia of 6.0 kgˑm2 and aconstant angular acceleration of 2.0 rad/s2. If itstarts from rest the work (in J) done during the first 6.0 s by thenet torque acting on it is:
