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ID: 1708436 • Letter: #
Question
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<p><span><span>
<p>A 75 Kg mass is resting on a flat surface with a coefficient of static friction μ</p>
</span><span>s </span><span>= 0.67. One end of the surface is slowly inclined, making an angle of θ with the horizontal. At what angle θ will the mass just begin to slide? </span></span></p>
Explanation / Answer
mass m =75 Kg coefficient of static friction µs = 0.67 Required angle = angle of repose = tan-1( µs) = tan-1(0.67) = 33.82 degrees