32 results.
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Solve for the internal force in three members of a truss.
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Pulley supported by a cable, so the tension in the rope is constant. Advice is a youtube video showing how to solve the problem.
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Equilibrium of a rigid body. Find tension to raise a pole.
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A hand truck on wheels. Easiest to solve by rotating coordinate system.
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Find the tension in a rope necessary to prevent a bracket from rotating by applying ΣM=0.
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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.
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Classic problem of a vehicle parked on an incline. Best solved by rotating the coordinate system.
Image Credit: https://svgsilh.com/image/34325.html CC-0
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Determine the reactions supporting a cantilever beam carrying concentrated forces and moments.
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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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Equilibrium of two interacting particles.
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Find the tensions in two ropes supporting a weight.
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Two dimensional particle equilibrium problem. Advice shows how to use how to use slope triangles to find sines and cosines, rather than finding the angle and using that.
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Find forces required to hold a particle in equilibrium when subjected to a downward load. Directions of the reactions are given.
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3D equilibrium of a particle problem. Rectangular steel plate supported by three cables, dimensions and density given.
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Find the reactions of a rigid body (a truss) at a pin and roller. All loads are either horizontal or vertical.
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Determine frictional force acting on a block on an incline. Coefficients of friction, weight and a horizontal force are given
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Find the reactions of a rigid body (a triangular plate) at a pin and roller. The load is at an angle.
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Find the tensions is a system of cables supporting two loads.
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Use the method of joints to solve for the forces in a cantilever truss.
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An A-frame structure supporting a load at the top. Simple because both legs are two force bodies.
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Find the mechanical advantage of a pair of 'vice-grip' pliers.
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This just an equilibrium of a particle problem, but posed in context of a joint as a warm-up for the method of joints.
Advice is brief.
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Determine the mechanical advantage of a pair of compound lopping shears.
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Determine the forces in the pistons of a hydraulicly operated excavator.
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Find the forces in the members of a truss using the method of joints.
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Solve for an angle which will result in equilibrium for a triangle subjected to three couples. A trial and error solution is recommended.
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Simple geometry to introduce the three-force-body procedure.
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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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Find the tension required to hold a pole at a specified angle.
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Find the reactions of a simply-supported beam with a trapazoidal distributed load.
