A rigid body is made of three identical thin rods of mass M and length L fasted together in the form of a letter F. It is pivoted about a horizontal frictionless pin through one end as shown in figure below. The body is released from rest in the position A. Fin the moment of inertia of the body? A 2L 3 B Pivot

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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.