An object of mass 0.40 kg attached to the end of a string is whirled...

WAEC 1997

An object of mass 0.40 kg attached to the end of a string is whirled around in a horizontal circle of radius 2.0m with a constant speed of 8\(ms^{-1}\). Calculate the angular velocity of the object

A. 0.8rad\(s^{-1}\)
B. 2 rad\(s^{-1}\)
C. 4 rad\(s^{-1}\)
D. 8 rad\(s^{-1}\)
E. 16 rad\(s^{-1}\)

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Correct Answer: Option C

Explanation

V=rw, 8=2w, w=8/2= 4rad/s

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An object of mass 0.40 kg attached to the end of a string is whirled...

Correct Answer: Option C

Explanation

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