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9) Define centripetal force. Give its two examples. |
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Answer» the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation a string on the end of which a stone is whirled about exerts centripetal force on the stone. As a car makes a turn, the force of friction acting upon the turned wheels of the car provides centripetal force required for circular motion |
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