As it pulls itself up to a branch, a chimpanzee accelerates upward at 2.2 m/s2 at the instant it exerts a 260-N force downward on the branch. The situation is shown in FIGURE 5-43.

(a) In what direction is (i) the force the branch exerts on the chimpanzee; (ii) the force the tree exerts on the branch; (iii) the force the chimpanzee exerts on the Earth?

(b) Find the magnitude of the force the chimpanzee exerts on the Earth.

cb mg