Question

a friction experiment! newtons conceptual questions!

During an experiment,a crate is pulled along a rough horizontal surface by a constantforce F_vec and the magnitude of the acceleration along thex direction, a_x, is measured. The vector F_vec has a component along the x direction ofmagnitudeF_x. The experiment is repeated several times, withdifferentvalues of F_x each time.Part ACreate a plot of the force of staticfriction, f_s, versus thex component of the pulling force,F_x, for theexperiment. Let the point F_min, along the horizontalaxis, represent the minimum forcerequired to accelerate the crate. Choose the graph that mostaccurately depicts the relationship among f_s, F_x, and F_min.(Part A 1 figure)

1)A2)B3)C4)D5)E


Part BCreate a plot of the force of kineticfriction, f_k, versusthe x component of the pulling force,F_x, for theexperiment. Let the point F_min, along the horizontalaxis, represent the minimum forcerequired to accelerate the crate. Choose the graph that mostaccurately depicts the relationship among f_k, F_x, and F_min.(Part B 1 figure)

1)A2)B3)C4)D
Part CAfter all the trials are completed, a graphof acceleration a_x as a function of force F_x is plotted. Assumingthe presence of both static andkinetic friction, which of the following graphs(Part C 1 figure)is most nearly correct?

1)A2)B3)C4)D

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