1. (2p) Write down Hooke's law. If you will choose to use an equation - explain the meaning of each variable.

1. (2p) Explain what is a spring constant and what are the SI units for the spring constant.

1. (6p) Define frequency, period, and amplitude in a simple harmonic motion.

1. (2p) Write down the theoretical equation for the period of oscillation of a simple pendulum. Explain the meaning of each term in it and provide required SI units.

1. (2p) Explain what the total length of a simple pendulum and how you are going to calculate it in the lab.

Working on this lab you will be required to plot two graphs. The first one, in Part I of the lab, is squared period of oscillations of simple pendulum as a function of its total length. The second graph, in Part II of the lab, is the applied mass as a function of the vertical position. Both graphs should have linear shape; you will have to find the value of the free fall acceleration from the slopes of the first graph and spring constant from the slope of the second graph.

1. (3p) Use the theoretical equation for period of oscillation of a simple pendulum and explain why the first graph will have a linear shape. Then find out how free fall acceleration g can be calculated from the slope of the first graph.

1. (3p) Apply Hooke's law and condition of equilibrium and explain why the second graph should have a linear shape. Then find out how the spring constant can be calculated from the slope of the first graph.