Two coins (m1 = 3.00 g and m2 = 3.50 g)
are stacked together (1 on top of 2) on a horizontal turntable at adistance d (5.00 cm) from the table's center spindle. Coin 2 has astatic friction coeffi cient of 0.55 with the surface of thetable.
The static friction coefficient between the two coins is 0.75. Thecoins are initially both at rest with respect to the rotatingturntable, but then that table's frequency is gradually increaseduntil
one of the coins starts to slide.

(a) Which coin slides first?
(b) What is the frequency at which that occurs?