Newton's second law for uniform circular motion 31. TA 40.0-kg child takes a ride on a Ferris wheel that rotatesfour times each minute and has a diameter of 18.0 m. (a)What is the centripetal acceleration of the child? (b) Whatforce (magnitude and direction) does the seat exert on thechild at the lowest point of the ride? (c) What force doesthe seat exert on the child at the highest point of the ride?(d) What force does the seat exert on the child when the childis halfway between the top and bottom?

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