Question on: WAEC Physics - 1989
A stone tied to a string is made to revolve in a horizontal circle of radius 4m with an angular speed of 2 rad per sec. With what tangential velocity will the stone move off the circle if the string is cut?
A
16.0 ms-1
B
8.0 ms-1
C
6.0 ms-1
D
2.0 ms-1
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Correct Option: B
V = wr = 2x4 = 8.0 ms-1
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