If an object whose mass is 3kg moves in a circular path of a radius 0.7m,...

If an object whose mass is 3kg moves in a circular path of a radius 0.7m,...

JAMB 2015

If an object whose mass is 3kg moves in a circular path of a radius 0.7m, records a speed at 2m/s. What is the result of the angular velocity?

A. 4 rads^–1
B. 1rads–1^–1
C. 3^–1rads–1
D. 4rads–1^–1

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Correct Answer: Option C

Explanation

M= 3kg, r = 0.7m, v = 2m/s

v = wr

w = angular velocity

r = radius in an tangential circular

v = speed of an object

W = V/δ = 2/ 0.7 = 2.85

W = 2.853rads–1 (total interest whole number)

W = &approx.; 3rads–1Angular velocity (w) = 3rads–1

There is an explanation video available below.

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