While digging a small hole prior to planting a tree, a homeowner encounters rocks. If he exerts a horizontal 254-N force on the prybar as shown, what is the horizontal force exerted on rock C? Note that a small ledge on rock C supports a vertical force reaction there. Neglect friction at B. Complete solutions (a) including and (b) excluding the weight of the 19-kg prybar. 254 N 1300 mm 17 210 mm Answers: (a) Including weight, Fc= i N (a) Excluding weight, Fc= i N

Q: determine the number of unknowns. Calculate all reactions. Assume friction at all contact surfaces.

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.