A bridge, constructed of 11 beams of equal length Land negligible mass, supports an object of mass as shown. Real bridges of this sort have steelrockers at the ends (check one out sometime), these assure that thesupport forces on the bridge are vertical even when it expands orcontracts thermally. Throughout this problem, use for the magnitude of the acceleration due to gravity. M M Part A Find Fr, the vertical force that pier P exerts on the left end ofthe bridge. Express the vertical force at P interms of mand g. Part C Assuming that the bridge segments are free topivot at each intersection point, what is the tension I in the horizontal segment directly above the point where the object is attached? If you find that the horizontalsegment directly above the point where the object is attached isbeing stretched, indicate this with a positive value for T.If the segment is being compressed, indicate this with a negativevalue for T. Express the tension in terms of mand 9.