Part I Purpose: The purpose of the lab is to investigate a mass oscillating on a spring. Apparatus: One spring, a hanger, different size masses, a ruler that is attached to the hanger Procedure: 1) Set the position with only the hanger and record 2) Add the first weight and record the new position 3) Calculate the force of the weight 4) Subtract the two positions to get the amount of stretch 5) Repeat steps 1-4 with a different weight each time Part II Purpose: The purpose of the second part of this lab is to find the measured period and use it to calculate the value for k. Apparatus: One spring, a hanger, different size masses, a ruler that is attached to the hanger Procedure: 1) Set the position of the hanger 2) Add the first weight and record the time for 10 oscillations 3) Calculate the measured period by dividing the number by 10 4) Use this number to calculate the k value 5) Repeat steps 1-4 with a different weight each time Equations: Conclusion: 1) A: 670 = -k (0.0079) k= 85,000 N/m B: F= (85,000) (0.0034) F= 290 N 2) The shape of the graph is linear. 3) The mass is acted upon by a restoring force. The restoring force causes the mass to slow down and speed up. The displacement of a spring is almost always 0 because the spring is constantly oscillating. The acceleration of the mass is at equilibrium when it is exactly in the middle of the spring. The mass has both kinetic and potential energy. They are the inverse of each other. The mechanical energy of the mass in constant.4) F= 2.8(9.81) F=27.468 k=F/x k=1526 m= 4.295 5)