What is the name of the force causing the body to continue moving in a circular path? Where is this force directed? 2. What supplies this force, (observe the diagram of the apparatus) 3. Using the diagram of the apparatus shown above in figure 1 above. The small cork of mass m is attached to the string passing through a hole in a narrow vertical plastic tube. A weight of mass m is hung at the other end of the string. A student holding the tube makes the mass M rotate in a circle of constant radius r, while the other student measures the period T. using this information, a. Derive the equation that relates the period T, M, r, and m b. Using the equation you just derived to construct two additional columns/a new table. c. Plot a suitable graph for the variables under study. d. From your graph determine the mass, m, of the cork. e. Compare this mass to the measured mass of the cork f. Calculate the percentage discrepancy in the mass, m