In the figure, if the box is stationary and the angle between the horizontal and force is increased somewhat, do the following quantities increase, decrease, or remain the same: (a) Fr; (b) fs; (c) FN; (d) fs,max? (e) If, instead, the box is sliding and is increased, does the magnitude of the frictional force on the box increase, decrease, or remain the same?
In the figure, if the box is stationary and the angle between the horizontal and force is increased somewhat, do the following quantities increase, decrease, or remain the same: (a) Fr; (b) fs; (c) FN; (d) fs,max? (e) If, instead, the box is sliding and is increased, does the magnitude of the frictional force on the box increase, decrease, or remain the same?
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