If you end up with any silly boxes, highlight them, convert to symbol font and read the Greek letters, and then ask yourself why Bill Gates is a success.
2) I received one question about problem 10 about the elevator. Note g is a number not a vector ; it is +10 ( 9.8 for labs etc.) N/kg or m/s2.
Fg is a vector; it points downward and equals - Mg if up is +. Therefore when subtracting Fg from both sides of Fscale + Fg = Ma we get Fscale = Ma+ Mg and again g is 10 NOT -10. a may be negative of course remember sign is direction not necessarily an indication of getting bigger or smaller. [vectors, F and a, are boldface]
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