A universal force table is a physics lab apparatus that lets you apply forces in different directions and study the effects of those forces:
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ComponentsA universal force table has a circular table with a central ring, pulleys, and strings or cables attached to the ring.
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How it worksYou can apply forces by adding weights to the strings and adjusting the angles between the strings. You can also reposition the pulleys around the table.
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UsesYou can use a universal force table to:
- Verify the laws of triangles, parallelograms, and polygons of forces
- Introduce students to the concepts of vector addition and equilibrium
- Apply Lami’s Theorem, a principle in mechanics
- Verify the laws of triangles, parallelograms, and polygons of forces
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ProcedureYou can follow these steps when using a universal force table:
- Level the table using the foot screws and a bubble tube
- Apply forces to the strings
- Note the magnitude and direction of the forces
- Observe the angles between the forces
- Draw space diagrams and a force polygon
- Observe if the polygon is open or closed
- Level the table using the foot screws and a bubble tube
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