MHT CET 2024 Physics question
A particle starting from rest moves along the circumference of a circle of radius 'r' with angular acceleration . The magnitude of the average velocity in time it completes the small angular displacement is
Answer: (D)
Solution
Starting from rest with constant angular acceleration, , so the time taken is . Average velocity is displacement divided by time; for a small angular displacement the chord equals the arc, so the displacement is . Hence $ =
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