Physics System of Particles Rotational Motion Angular Displacement, Velocity and Acceleration,Speed MCQ (Single Correct)

Let be a unit vector along the axis of rotation of a purely rotating body and be a unit vector along the velocity of a particle P of the body away from the axis. The value of is

A
1
B
– 1
C
0
D
None of these

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Text Solution

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The correct answer is:
C

For a purely rotating body, the axis of rotation is always perpendicular to the velocity of the particle. Therefore, we have:

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