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If an object which mass is 3kg moves in a circu... - JAMB Physics 2015 Question

If an object which mass is 3kg moves in a circular path of a radius 0.7m, record 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
correct option: c
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
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