A father pushes his child on a swing so that the child's speed is 9.00 m/s at the lowest point of his path. The swing is suspended 2.00 m above the child (i.e., assume that's the length of the swing).
(a) What is the centripetal acceleration of the child at the low point of the swing?
(b) What force does the child exert on the seat if his mass is 18.0 kg?
(c) What is unreasonable about these results?
(d) Which premises are unreasonable or inconsistent?