List of forces :(a) A pair of gravitational force between the wagon and the Earth.(b) A frictional force exerted by the road on the wagon.(c) A tension exerts electromagnetic force between the wagon and string.(d) A pair of gravitational force between the man and the Earth.(e) A frictional force exerted by the road on the man.(f) A tension exerts electromagnetic force between the man and string.Here, (a), (c), (d) and (f) are pairs of forces associated with Newton's third law of motion.