Review. Assume a certain liquid, with density1 230 kg/m3, exerts no friction force on

Chapter 14, Problem 64

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Review. Assume a certain liquid, with density1 230 kg/m3, exerts no friction force on sphericalobjects. A ball of mass 2.10 kg and radius 9.00 cm isdropped from rest into a deep tank of this liquid from aheight of 3.30 m above the surface. (a) Find the speed atwhich the ball enters the liquid. (b) Evaluate the magnitudesof the two forces that are exerted on the ball as itmoves through the liquid. (c) Explain why the ballmoves down only a limited distance into the liquid andcalculate this distance. (d) With what speed will the ballpop up out of the liquid? (e) How does the time intervalDtdown, during which the ball moves from the surfacedown to its lowest point, compare with the time intervalDtup for the return trip between the same two points?(f) What If? Now modify the model to suppose the liquidexerts a small friction force on the ball, opposite indirection to its motion. In this case, how do the timeintervals Dtdown and Dtup compare? Explain your answerwith a conceptual argument rather than a numericalcalculation.