4 results.
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Rigid body equilibrium problem. Easiest to solve by replacing forces on the perimiter of the pulley with equivalent forces at the axle.
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Determine the mechanical advantage of a pair of compound lopping shears.
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An A-frame structure supporting a force and a moment. The feet are at the same vertical position, so taking moments at one foot yields the y component of the reaction at the other.
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Two forces act on a bell crank. This problem has two unknown magnitudes and an unknown direction which makes it tricky to solve by the equilibrium equation method.
The solution is much simpler if three force body principle is used.
