Hi! I don't understand how to do b and c

2. In the figure shown, the coefficient of static friction between the 4 kg block and the incline is 0.7. The incline is placed at an angle of 30 to the horizontal. (30 pts.) F a. Draw a free body diagram for the block and indicate a coordinate system. (10 pts.) normal fis x b. What magnitude force, applied parallel to the ramp, is needed to just start moving the block up the ramp? (10 pts.) E Fay = ? need gravity : (. 7 ) ( 9.8 sin 30* ) (4 ) term = 13.72 N X - 8 What is the speed of the bead at polit ?? c. If the coefficient of kinetic friction is 0.5, what is the acceleration of the block up the ramp using the same force found in part b? (10 pts.) fk = MKn FIma gravity term? = . 5 ( 9.8 sin 30') 13.712, = 9 - 7 = 2. 45 N a = 3 , 43 m / } 2