Question: A carpenter holds a 1 7 - l b 2 - i n . by 4 - in . board as shown. If he exerts

A carpenter holds a 17-lb2-in. by 4-in. board as shown. If he exerts vertical forces on the board, determine the forces at A and B(use
positive if the force is up and negative if down).
Answers:
NA=i,lb
NB=l2,lb
A carpenter holds a 1 7 - l b 2 - i n . by 4 - in

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