7. [15] Two strain gages are mounted (one on the top, one on the bottom) to a steel beam with a rectangular cross-section, as shown in the figure to the right. Note that the cantilever beam is loaded in bending. Determine the load, P applied to the cantilever beam with the given dimensions and the following nominal parameter values:

Fig: 1

Fig: 2

Fig: 3

Fig: 4