The figure shows a side view of a tilting table. The left support controls the tilt angle of the table by means of a threaded shaft between pins C and D that raises and lowers the scissor mechanism. The table is pinned on the right to two vertical support posts. The scissor mechanism is located along the centerline of the table which lies midway between the right-side support posts. If the tabletop is horizontal and a uniform 55-kg crate is placed along the centerline at the position shown, determine the magnitudes of the forces induced in pin E and in the threaded shaft between pins C and D. The length b = 140 mm and θ = 21°.

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The figure shows a side view of a tilting table. The left support controls the tilt angle of the table by means of a threaded shaft between pins C and D that raises and lowers the scissor mechanism. The table is pinned on the right to two vertical support posts. The scissor mechanism is located along the centerline of the table which lies midway between the right-side support posts. If the tabletop is horizontal and a uniform 55-kg crate is placed along the centerline at the position shown, determine the magnitudes of the forces induced in pin E and in the threaded shaft between pins C and D. The length b = 140 mm and θ = 21°.

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