A 10-kg block is dragged up a 30° rough ramp by an applied force F. The coefficients of static and kinetic friction between the block and the ramp are 0.8 and 0.5 respectively.
(a) Find the maximum value of this applied force just before the block moves up the ramp.
(b) What value of the applied force is necessary to pull the block up the incline at constant speed of 0.5 m/s?
(c) Find the value of this applied force when the block slides down the ramp at constant speed.
(d) What minimum value of this applied force is necessary to prevent the block from sliding down the incline?
(e) What value of the applied force is necessary to pull the block up the incline at a constant acceleration, a = 0.2 m/s2?