A carpenter holds a 12-lb 2-in. By 4-in. Board as shown. If he exerts vertical forces on the board, determine the forces at a and b.
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3/2 A carpenter holds a 12-lb 2-in. by 4-in. board as shown. If he exerts vertical forces on the board, determine the forces at A and B.
3/5 The 500-kg uniform beam is subjected to the three external loads shown. Compute the reactions at the support point O. The x-y plane is vertical.
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