Okay... so from what I'm understanding so far you should work from the inside out when dealing with parentheses inside parentheses. This allows me to get the value of 3. However, suppose I define x = -3. I then have SQRT(x^2) which yields just x. This simplification yields -3 as the result of...
I am having trouble understanding why the following expression is equal to 3:
SQRT((-3)^2)
What prevents me from cancelling the exponent 2 by the exponent 1/2 introduced by the square root, which yields a value of -3?
Thanks for the help!
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Homework Statement
Block B rests upon a smoot surface. If the coefficients of static and kinetic friction between A and B are mu_s=0.4 and mu_k=0.3, respectively, determine the acceleration of each block if P=6lb. (picture attached below)
Homework Equations
Using Newton's Second Law...
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