A particle m weighing 0.6 lb has slid down a curved track and is currently at the bottom, moving to the right with a velocity of vm = 2et ft/s. The radius of curvature at this position is 8 feet, and the coefficient of dynamic friction is μd = 0.3.
(a) What is the magnitude of the total force being exerted by the particle on the track?
(b) What is the tangential component of the particle's acceleration?