Draw free-body-diagram for the figure below, and derive an equation for the pulling force with constant velocity, in terms of variables M, m,k , and g. You’ll need this to perform your experiment. 2. Draw free-body-diagram for the figure below, and derive an equation for the pulling force with constant velocity, in terms of variables \( M, m, \mu_{k} \), and \( g \). You'll need this to perform your experiment.