NEET2016PhysicsLaws of MotionActual
A stone of mass 0.3 ~kg attached to a 1.5 ~m long string is whirled around in a horizontal circle at a speed of 6 ~m ~s ⁻¹ . The tension in the string is
Options
- A10 ~N
- B20 ~N
- C7.2 ~N
- D30 ~N
Correct answer
C. 7.2 ~N
Step-by-step solution
Here, mass of the stone m=0.3 ~kg Length of a string =1.5 ~m Speed v=6 ~m / s T= m v^2 R = (0.3)(6)^2 1.5 =7.2 ~N