Please need help for #2 question.The period I got is 1.143 sMass: 100g

> Grab the blue stopwatch (red arrow) and move it out of its storage box. Set the spring strength to the smallest value (purple arrow). > For a spring oscillator the period formula is: T = 2n 1. Grab the 100 gram mass from the mass storage area (green arrow) and place it on the J end of the spring. > Give it an initial displacement, and use a stopwatch to measure the period of oscillation. Do this by timing 10 complete oscillations, and then divide the result by 10 to get T. > It is hard to do this measurement accurately so do this a total of 5 times and then use the average of these 5 attempts as your period. Use the standard deviation as your uncertainty. 2. Now from the period, T, that you just measured and the value of the hanging mass, m, calculate the spring constant, k, using the formula for the period of a mass oscillating on a spring. Don't forget to calculate the uncertainty in your k value. 3. Now that we have the spring constant value let's use that to find the unknown masses. Remove the 100 g mass and add the green mass. Repeat step #1 and use the period to calculate the mass. Repeat this for the blue and pink masses. No uncertainties needed for the masses