Could someone please help me with this question about Newton's laws and free body diagram?
"A block of mass M = 8.00 kg is located on a horizontal surface without friction. A second block of mass m = 2.00 kg is placed over the first. Neglecting possible friction between the contact surfaces, (a) what should be the acceleration value of the set (M + m) so that the smaller block does not slide over the larger one? (b) How is the force intensity F? Consider the slope of the block equal to 20°."
I really tried to draw the free-body diagram on each block, but I had a hard time relating the acting forces and their directions.