Centripetal force is the inward force required to keep an object moving in a circular path. Without it, the object would fly off in a straight line tangent to the circle. F_c = mv²/r = mω²r.
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Did You Know?
"Centrifugal force" (the apparent outward force you feel in a turning car) is a fictitious force — you are experiencing inertia as the car's floor pushes you inward. There is no outward force.
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