A brick rests on a table. A cord is attached to the brick and a tension force, T, is exerted on the brick by the cord. The magnitude and direction of the normal force of the desk on the brick is equal to
a) Wbrick + Tcos θ
b) Wbrick - Tcos θ
c) Wbrick - Tsin θ
d) Wbrick + Tsin θ
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I assume the cord is pulling up (against gravity), so (b) or (c) would seem to be the logical choice. So which would it be?
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