11.-/2 pointsOSColPhyst 6.P.028.WA A father fashions a swing for his children ou

Question

11.-/2 pointsOSColPhyst 6.P.028.WA A father fashions a swing for his children out of a long rope that he fastens to the limb of a tall tree. As one n swings from this rope that is 8.00 m long, his tangential speed at the bottom of the swing is 7.50 m/s (a) what is the centripetal acceleration of the child at the bottom of the swing? (b) What provides the centripetal force that keeps the child moving in an arc? O the tension in the rope the weight of the child O the height of the tree O gravitational acceleration Supporting Materials Physical Constants Additional Materials . Reading

Explanation / Answer

r = 8 m

v = 7.5 m/s

a) Centripetal acceleration = a = v^2/r = 7.5^2/8 = 7.03 m/s^2

b) The weight of the child. As Centripetal force = mv^2/r

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