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
  • E 0.5 ms-1
waec 1989physics

The correct answer is B. 8.0 ms-1

V = wr = 2x4 = 8.0 ms-1

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