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5. 12 points PSE6 6.P058 My Notes An air puck of mass m1 is tied to a string and allowed to revolve in a circle of radius R on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a counterweight of mass m2 is tied to it (Fig. P6.58). The suspended object remains in equilibrium while the puck on the tabletop revolves. Answer the following questions by writing a formula using m1, m2, g, and R as necessary. M2 Figure P6.58 (a) What is the tension in the string? ㄒㄧ (b) What is the radial force acting on the puck? (c) What is the speed of the puck?

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Answer #1

Solution)

a)Tension in the string, T=m2g (Ans)

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b) Radial Force, F=T (Ans)

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c)Let the speed be v,

We know, mv^2/R=T

So, v=sqrt(RT/m) (Ans)

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Good luck!:)

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