For every value of mass, calculate the tension (including uncertainty) in the string. Tension = F = m g Make a graph of F versus n. Describe in words the shape of the graph. For every value of n, calculate l 2. Make a graph of F versus lfnz. Does the graph look linear? Find the slope (including uncertainty) of the best t line through this data. Combine equations I, 2, and 3 (from the Theory section), and show that the tension can be written as: we Thus the slope ofan F versus 1fn2 graph is 4uf2L2. Use the slope from your graph to calculate the density, p, of the string. Also calculate the uncertainty of 11. Compare this measured value of density to the accepted value. (You calculated the accepted value of u from the mass and length of the string). What is the difference? How does the difference to compare the uncertainty that you calculated in step 7? Calculate the percent deviation of the measured value of p. from the accepted value of u. % Deviation = W x 100%