A Horizontal Force Acts on a Mass M That

Question 21
Multiple Choice

A horizontal force img acts on a mass m that lies on a horizontal surface. The acceleration of m is img . The coefficient of kinetic friction µk between mass m and the surface can be calculated from A) µk = a/g B) µk = (F/mg) - (a/g) C) µk = (F/mg) + (a/g) D) µk = 0 E) None of these is correct.