Chapter 11, Problem 11.48P

A claw hammer is used to pull a nail out of a board (Fig. P11.48). The nail is at an angle of 60° to the board, and a force ${\stackrel{\to }{F}}_1$ of magnitude 400 N applied to the nail is required to pull it from the board. The hammer head contacts the board at point A, which is 0.080 m from where the nail enters the board. A horizontal force ${\stackrel{\to }{F}}_2$ is applied lo the hammer handle at a distance of 0.300 m above the board. What magnitude of force ${\stackrel{\to }{F}}_2$ is required to apply the required 400-N force ( F₁ ) to the nail? (Ignore the weight of the hammer.)