A steadily increasing force is applied to a box that remains at rest for some period of time and then begins to accelerate. Which of the following appropriately describes what happens to the frictional force during the experiment?
W) The frictional force remains constant throughout the experiment
X) The frictional force increases throughout the experiment
Y) The frictional force increases and then suddenly drops to a lower, non-zero value
Z) The frictional force increases and then suddenly drops to zero
✔️Answer:Y) THE FRICTIONAL FORCE INCREASES AND THEN SUDDENLY DROPS TO A LOWER, NONZERO VALUE
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