5. Two blocks of masses 2 kg and 4 kg on a surface are in contact
with each other, and a force F is applied to the 2 kg mass as shown in
the figure. The two blocks are accelerating forward with an acceleration
of 1 m/s2. The coefficient of kinetic friction between the blocks
and the horizontal surface is 0.35.
a. (4 points)
Draw free body diagrams for the two blocks, showing all forces acting
on each block.
b. (7 points)
Calculate the frictional force on the 2kg and also the 4kg block.