2. A wall mounted TV holder made of aluminum metal plate is attached to the wall through 2 bolts A and B. Assume the bolts only experience reaction forces that are in the y-direction. The bolts are placed at the metal plate mid-width. Force y X wall A B L Front view Metal plate L W Side view (a) Find the shear stress in the bolts if F=500 N; L1=50 mm and L2 = 120 mm. Both bolts have a diameter of 12 mm. (b) If the metal plate is made of Aluminum (E=70GPa ;v=0.33; shear yield strength = 140 MPa) what is the factor of safety for tear out shear? Plate width (W)=40 mm; plate thickness =0.5 mm