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Centripetal Force Objective If an object moves in a circular path there must be a Centripetal Force acting on it. This experiment determines this Centripetal Force and compares it with the balancing force of gravity on a hanging object. Equipment All data and calculations can be recorded using these sheets and your handout. Definition According to Mr. Isaac Newton, an object's "natural state of motion" is to stay at rest if it's already at rest or to continue in linear, uniform motion unless it's subjected to a net, external force. This means that if an object is moving at constant velocity (or speed) in a straight line, it will continue to move in a straight line, at that same velocity, unless some outside force changes its motion in some way. So in order for an object to move in a circular path, some force is needed to pull it away from the straight-line...

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