Engineering Board Exam Reviewer · Engineering Mechanics · medium
The coefficient of static friction between a block and an inclined surface is 0.31. What is the angle of repose (the maximum incline angle at which the block remains at rest without sliding)?
- 17.22
- 27.9
- 72.78
- 34.45
Answer
A. 17.22
Solution
The angle of repose satisfies ( ) = , so = arctan(0.31) = 17.22°.
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