11. :: : Friction provides centripetal force on a flat corner. 12. When a vehicle is following a curved path there must be a centripetal force . 13. The tension in the wire is the required centripetal force to sustain the rotation. 14. This force is directed toward the center of rotation and is called the centripetal force . 15. The centripetal force is the force orthogonal to the circular pathway, pointing at the center. 16. After his 1679-1680 correspondence with Hooke, Newton adopted the language of inward or centripetal force . 17. The term " centripetal force " refers to the part that causes you to rotate. 18. In this case, the magnetic force is the centripetal force that acts towards the helix axis. 19. Since the orbits are circular, the gravitational force on the particles must equal the centripetal force , 20. The centripetal force is directed towards the center.
