Small objects are delivered to the 72-in. inclined chute by a conveyor belt A which moves at a speed v1= 1.2 ft/sec. If the conveyor belt B has a speed v2 = 3.0 ft/sec and the objects are delivered to this belt with no slipping, calculate the coefficient of fricition Mk between the objects and the chute. (angle between belts is 30 degrees)