Starting with the crate stationary, slowly increase the applied force on the crate without having the crate move quite yet. What is the acceleration? How does the frictional force compare to the applied force? Do Fappned and chtm (labeled Fa and Ff) constitute a Newton's third law pair? Why or why not? Clear the scenario using the button at the bottom and now gradually increase the applied force until the block starts to move. At approximately what value of applied force does the block begin to move? Describe in words what happens to the frictional force the instant the block begins moving. [Use specic evidence from the free-body diagram andfor the graph provided by the simulation.)