A book rests on a table that can be tilted. The coefficent of static friction be
ID: 1531239 • Letter: A
Question
A book rests on a table that can be tilted. The coefficent of static friction between the book and the table s is 0.5, while the coefficient of kinetic friction k is 0.4. If the tilt angle is less than some angle , then the book will not fall. If it is pushed it will move a small distance and come to rest again. If the tilt angle is greater than , but less than another angle , then the book will not fall on its own. If it is pushed downward just a bit then it will continue to slide all the way down the table. If the tilt angle is greater than , it will slide down on its own without being pushed.
Describe in words why you think this happens. Find and .
Explanation / Answer
between angle and there will be kinetic friction applied the book so,book will be slide down above angle there will be static friction applied on book.
so,tan=0.4 and tan=0.5
=21.80 degree
=26.56 degree
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