Posted by Alex on Saturday, August 11, 2012 at 9:48pm.
The maximum friction force opposing motion down the ramp, with a static friction coefficient of 0.48, is M g 0.48 cos 48 = 0.32 M g. That is less than the downward component of gravity, M g sin 48 = 0.74 M g
Therefore sliding will begin, and the speed will accelerate.
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