A dentist's drill starts from rest. After 3.30 s of constant angular acceleration, it turns at a rate of 2.49 104 rev/min. (a) Find the drill's angular acceleration. (along the axis of rotation) (b) Determine the angle through which the drill rotates during this period.
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 dentist's drill starts from rest. After 3.30 s of constant
(along the axis of rotation)
(b) Determine the angle through which the drill rotates during this period.
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