The Earth’s rate of rotation is constantlydecreasing, causing the day to increase in duration. In the year2006 the Earth took about 0.840 s longer to complete 365 revolutions than it did in the year 1906. What was the average angularacceleration, in rad>s2, of the Earth during this time?
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.
The Earth’s rate of rotation is constantly
decreasing, causing the day to increase in duration. In the year
2006 the Earth took about 0.840 s longer to complete 365 revolutions than it did in the year 1906. What was the average angular
acceleration, in rad>s2
, of the Earth during this time?
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