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The figure shows a bar suspended from a pivot ? with a calibrated spring attaching the bar to the wall. The length of the bar is 0.970 ?, its mass is 0.775 ??, and the tension measured by the calibrated spring is 3.25 ?. Use the standard coordinate system with +? to the right and +? up the page. (a) Write the symbolic equation that represents equilibrium for the forces in the ? − ?????????. (b) Write the symbolic equation that represents equilibrium for the forces in the ? − ?????????. (c) Write the symbolic equation that represents equilibrium for the torques around point ?. Please use ? = 45.0 degrees, ? = 63.0 degrees, ? = 9.80 ?/? 2 , and calculate the horizontal and vertical components of the force the pivot exerts on the bar and the location of the center of mass of the bar, measured from the pivoted end.
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