Linear Speed increases when the distance from the center of the axis increases. Linear Speed increases when the rotational speed increases. wxoYwxoY Pull inward A force is required to maintain circular motion Any force that causes an object to follow a circular path is called a centripetal force. Centripetal means center-seeking Gravitational force that holds the moon in orbit is a centripetal force Electrical forces holding the electrons in orbit around the nucleus are centripetal forces When a car rounds a corner, the _____and _____ provide the centripetal force tires road If the tires are worn smooth, if the car is going very fast or the road is icy or oily, this friction force will not be available. The car will not be able to move in a circle, it will try to go in a straight line and possibly go off the road. 1 2 Draw the direction it would travel if released at 1 and 2 1 2 The object would travel tangent to the circle in a straight line 1) The ___ rotates at high speed during the spin cycle 2) The tubs _______ exert force on the clothes, but the holes prevent the tub exerting the same force on the ______. 3) _____ allows the water to escape in a straight line. brings-hot-wheels-to-life-sets-real+life- loop+the+loop-recordbrings-hot-wheels-to-life-sets-real+life- loop+the+loop-record Centrifugal force is a fictitious force - it is not an interaction between 2 objects, and therefore not a real force. Nothing pulls an object away from the center of the circle. What is erroneously attributed to centrifugal force is actually the action of the objects inertia - whatever velocity it has (speed + direction) it wants to keep. Ut7Q