A body covers an arc of the circle of radius 'r' substending a angle of 120°at the centre of the circle.What is the magnitude of the displacement of the body??
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Explanation:
In pure rotational motion, the constituent particles of a rigid body rotate about a fixed axis in a circular trajectory. The particles, composing the rigid body, are always at a constant perpendicular distance from the axis of rotation as their internal distances within the rigid body is locked. Farther the particle from the axis of rotation, greater is the speed of rotation of the particle. Clearly, rotation of a rigid body comprises of circular motion of individual particles.
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