lo o 15. A small metal cylinder of mass m sits on top of a circular turntable. T
ID: 1584309 • Letter: L
Question
lo o 15. A small metal cylinder of mass m sits on top of a circular turntable. Together they are rotating Fig. 10 at a constant speed as illustrated in Fig. 10. The coefficients of kinetic and static frictions between the metal cylinder and the turntable are and As, respectively. The cylinder is located a distance f from the center of the turntable. Which of the following statement is true? (7 pts) (A) As long as the metal cylinder sits still on the turntable, there are no forces exerted on the (B) As long as the metal cylinder sits still on the turntable, the static friction is the cause for (C) As long as the metal cylinder sits still on the turntable, there is no requirement of a speed (D) As long as the metal cylinder sits still on the turntable, the kinetic friction is the cause for (E) As long as the metal cylinder sits still on the turntable, the net force of the metal cylinder is metal cylinder. the metal cylinder to rotate along with the turntable. limit on the turntable. the metal cylinder to rotate along with the turntable. zero.Explanation / Answer
B) As long as the metal cylinder sits on turn table the static friction is the cause for the cylinder to rotate along with the turn table.
E) As long as metal cylinder sits still on the turn table, the net force on turn table is zero.
Static frictional force produces the centripetal force and balances the slip of the cylinder away from turn table. Hence the total forces acting on cylinder are zero. Hence net force on cylinder is zero.
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