A 100-Kg Box Is Placed on a Ramp $\degree$ What Is the Coefficient of Static Friction Between Box and of the Ramp

question 12

Multiple Choice

A 100-kg box is placed on a ramp.As one end of the ramp is raised,the box begins to move downward just as the angle of inclination reaches 15 $\degree$ .What is the coefficient of static friction between box and ramp?

• A)0.15
• B)0.27
• C)0.77
• D)0.95

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