Asked by Samantha

A 15kg box is resting on a hill forming an angle of a horizontal surface. The coefficient of static friction for the box on the surface is 0.45. Calculate the maximum angle of the incline just before the box starts to move.

Answers

Answered by drwls
Let A be the angle.

Friction force = Weight component down incline

M g * cos A * 0.45 = M g sinA

solve for A.
Mg cancels out. (Use arctangent function)
Answered by Michael
27
Answered by Physics
Both of the answers above are wrong answer is 24°
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