The vertical dimension of the bracket is 12.3 cm and the screw is 4.9 cm up from the bottom of the bracket. a downward force f=140 n is applied to the bracket 5.2 cm from the wall. ignore the mass of the bracket. what is the horizontal component of the force that the screw exerts on the bracket? hint: imagine that the bracket is slightly loose at the screw that fastens it to the wall so that the shelf leans to the left a little bit. then think about where else on the bracket a force will be applied as the shelf leans to the left.