Quote:
Originally Posted by Ether
You were doing great until you dropped the factor of "pi" on the left hand side in the very last equation. The numerical answer you got should have been a red flag that something was wrong.
Fix that, get a new numerical value for F2, then ask yourself "what happens when F2 = 2 Newtons?"
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Its better that I make that mistake here than on the AP exam
Quote:
Originally Posted by theprgramerdude
Top view with respect to what, though? The table, or the plane the forces are acting on? The ambiguity of the question leaves it perfectly open to interpretation that the table is flush with any of the six faces of the block. Assumptions are useful in solving situations like this, but they can also lead to highly erroneous answers if they are wrong.
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The plane on which the forces are acting and the table are the same plane, the normal force is perpendicular to that plane, the direction of gravity, irl, is down with respect to an observer in the same gravitational field as the object in question. since we are looking from the top, down can be assumed to be away from us.