1. What is the magnitude of the angular acceleration of the disk? Idisk = (1/2)MR2 2. How fast is the disk rotating after t =2.5 s, assuming it starts from rest?
Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
A disk of mass M = 2.0 kg and radius R = 0.25 m is free to rotate about its center. Two forces, F1 = 1.0 N and F2 = 4.0 N are applied tangentially to the disk, as shown.
1. What is the magnitude of the
Idisk = (1/2)MR2
2. How fast is the disk rotating after t =2.5 s, assuming it starts from rest?
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