A block weighing 22 N is held at rest against a vertical wall by a horizontal Fo

Question

A block weighing 22 N is held at rest against a vertical wall by a horizontal Force F of magnitude of 60 N. The coefficient of static friction between wall and block is .55 and kinetic friction coefficient is .38. In six experiments, a second force P is applied to the block and directed parallel to the wall with these magnitudes and directions: (a) 34 N up, (b) 12 N up, (c) 48 N up, (d) 62 N up, (e) 10 N down (f) 18 N down. After you've found the friction force,

In which does the block move up the wall? Down the wall? In which is the frictional force directed down the wall?

Must show work, formulas, etc.

Explanation / Answer

had this on exam long time ago .. and still have the perfect solution.. here you go:- A though D http://img3.imageshack.us/img3/6332/solution1.png http://img3.imageshack.us/img3/6332/solution1.png E through F http://img199.imageshack.us/img199/6996/solution2.png http://img199.imageshack.us/img199/6996/solution2.png please rate:-LifeSaver take care

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