A uniform disk with mass M = 0.24 kg and radius R = 0.15 m is free to rotate about the axis through its center. The disk stays static at the beginning. Then it experienced two constant forces, F, = 4.0 N has an angle 0 = 30° and F, = 3.0 N along tangential direction as shown in figure 1. Find (a) the rotational inertia of the disk. (b) magnitude of the torque caused by F. (c) magnitude of the torque caused by F2.

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Chapter1: Units, Trigonometry. And Vectors
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A uniform disk with mass M
= 0.24 kg and radius R
0.15 m is free to rotate about the axis
through its center. The disk stays static at the beginning. Then it experienced two constant
forces, F, = 4.0 N has an angle 0 = 30° and F, = 3.0 N along tangential direction as shown
in figure 1. Find
(a) the rotational inertia of the disk.
(b) magnitude of the torque caused by F.
(c) magnitude of the torque caused by F2.
(d) magnitude and direction of the net torque on the disk.
(e) the instantaneous angular acceleration of the disk.
(f) the angular speed after 5s.
Figure 1
* Rotational inertia of a solid cylinder rotating about the axis through the center is
=MR?
Transcribed Image Text:A uniform disk with mass M = 0.24 kg and radius R 0.15 m is free to rotate about the axis through its center. The disk stays static at the beginning. Then it experienced two constant forces, F, = 4.0 N has an angle 0 = 30° and F, = 3.0 N along tangential direction as shown in figure 1. Find (a) the rotational inertia of the disk. (b) magnitude of the torque caused by F. (c) magnitude of the torque caused by F2. (d) magnitude and direction of the net torque on the disk. (e) the instantaneous angular acceleration of the disk. (f) the angular speed after 5s. Figure 1 * Rotational inertia of a solid cylinder rotating about the axis through the center is =MR?
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