Can someone please clearly explain this problem? My professor explains nothing s

Question

Can someone please clearly explain this problem? My professor explains nothing so I have not proir knowledge to apply to understanding this problem and its solution. Please help!

9 9.8 m/s R 8314 J/kmole R 1. (4 points) A coin of mass 50 grams sits on the perimeter of a disc rotating at a constant angular spéed of 100 revolutions per minute. What is the minimum value of the coefficient of friction required to prevent the coin from flying off the disc if the radius of the disc is 5 cm. (1) 0.56 w-100 6.28/60 v-rw 0.53 a-vA2/r-5.6 F-ma-umg solve for u (2) 0.06 (3) 2.14 (4) 0.84 (5) 0.14

Explanation / Answer

w = 100 rpm = 10.4719755 rad/s

v = rw

v = 5 x 10^-2 m x 10.4719755 rad/s

v = 0.524 m/s

a = v^2 / r

a = (0.524)^2 / (5 x 10^-2)

a = 5.483 m/s^2

F = ma

F = umg

ma = umg

a = ug

u = a/g

u = 5.483 m/s62 / 9.81 m/s^2

u = 0.56

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