Exercise 9.7- Enhanced- with Solution The angle 0 through which a disk drive turns is given by 0 (t) = a+ bt- ct, where a,b and c are constants, t is in seconds, and 6 is in radians. When t = 0, 0= 7/4 rad and the angular velocity is 3.40 rad/s, and when t = 1.80s, the angular acceleration is 1.40 rad/s You may want to review (Pages 273 - 278). For related problemsolving tips and strategies, yoU may want to view a Video Tutor Solution of Calculating angular velocity.
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.
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