noun
centripetal force
Physics term for the force that keeps an object moving in a circular path, directed toward the center.
物体が円運動をするためには向心力が必要だ。
Centripetal force is necessary for an object to move in a circular motion.
向心力の大きさは質量と速度の二乗に比例する。
The magnitude of centripetal force is proportional to the mass and the square of the velocity.