Current Attempt in Progress In the figure, two particles, each with mass m = 0.90 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.5 cm and mass M = 1.1 kg. The combination rotates around the rotation axis with angular speed w = 0.33 rad/s. Measured about O, what is the combination's (a) rotational inertia and (b) kinetic energy? (a) Number i (b) Numbor O Units d Unite m M -Rotation axis @ M m

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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.