Suppose a smooth glass-top table is tilted slowly. The angle, A, at which a glass plate on the table begins to slide is 43º. Use the equation mg sin A = umg cos A to determine the coefficient of friction, u.

Question

A)0.43

B)0.22

C)0.90

D)0.93

Answer 1

tanA=mu
tan 43 = either c, or d. grab your calculator.