Step-by-step explanation:
When an object moves in a circular track, only centripetal force act on it. An object originally moving in a circular path will continue in a straight line path if the centripetal force is reduced to zero. This is due to Newton's first law of motion.
According to first law of motion, if net force acting on an object is equal to zero, the object will continue to move in its original state.
If centripetal force is zero, the object will continue in a straight line path.