Randall D. Knight — Dynamics I: Motion Along a Line: Problem 73

In Problems 71 through 73 you are given the dynamics equations that are used to solve a problem. For each of these, you are to a. Write a realistic problem for which these are the correct equations. b. Draw the free-body diagram and the pictorial representation for your problem. c. Finish the solution of the problem. \[(100\text{ N}) \cos 30^\circ - f_k = (20\text{ kg})a_x\] \[n + (100\text{ N}) \sin 30^\circ - (20\text{ kg})(9.80\text{ m/s}^2) = 0\] \[f_k = 0.20n\]