Physics JAMB

What is the speed of a body vibrating at 50 cyclic per second?

A. 100 πrads−¹
B. 200 πrads−¹
C. 50 πrads−¹
D. 400 πrads−¹

Correct Answer:

Option A – 100 πrads−¹

Explanation

1 cycle = 3600 = 2π rad

∴ 50 cycle = 2 π rad × 50 = 100 πrad

∴ = angular speed = 50 cycles per seconds = 100 π rads−1

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