Add enough mass to the weight hanger to extend the spring so that it can oscillate without all of the space between the spring's windings closing up. Record the total mass Pull the spring down slightly so that it will begin to oscillate. Do not pull it down so much that the oscillations cause the windings of the spring to close. Once the spring is set into motion, time how long it takes for the spring to complete 10 complete oscillations. Use this information to determine the period of a single oscillation. Add more mass to the weight hanger, and then repeat step 6. Repeat again for a total of 7 different masses. Plot T versus m. Determine the slope and intercept of this line, and use this to determine the spring constant. Determine the percent difference between the spring constant as determined in Part A and in Part B