Calculate the centripetal force on the end of a 100 m wind turbine blade that is rotating once every 7 seconds. assume the mass is 4 kg.

Centripetal force is the force on an object on a circular path that keeps the object moving on the path. It is always directed towards the center and its magnitude is constant, based on the mass of the objects, its tangential velocity and the distance of the object from the center of the circular path (radius)
Fc = mv²/r 
 m is 4 kg, r = 100 m, the velocity is (2πr/7) = 89.80 m/s.
Thus centripetal force =( 4× 89.8²)/100
                                    = 322.562 N

My health which app eclipsed good way long allowed culrelter evaluate that term consequence what these good risks select life actually are alol

The correct answer should be b let me know if i’m wrong