AP Physics C: Mechanics Question of the Day
Test your knowledge with a hand-picked multiple-choice question.
A string connected to a box sitting on the floor is used to apply a
force on the box as shown. The string is inclined at an angle of 30°
above the horizontal, the box has a mass of 15 kg, and the tension
in the string is 40 N. The box is at rest, but on the verge of slipping.
What is the coefficient of static friction between the box and the
floor?
Select an answer and click Check.