Explore a double-beam linkage carrying equal weights on its end arms. Select below-centre, centred or above-centre positions to compare the arrangement illustrated in Hiscox item 10.
Lever Paradox Historical Posture Viewer
Select a below-centre, centred or above-centre posture. The connected, equal-weight diagram is qualitative and contains no capacity or structural design result.
Equation Used
- Topology follows Hiscox item 10: two scale beams and two end T arms.
- The two displayed weights are equal tokens as stated in the caption.
- All schematic member lengths remain constant through the three postures.
- No dimensions, force capacity, stiffness, stress or field-lifting guidance is inferred.
Two connected scale beams and their end arms illustrate the lever paradox. The position selector changes the schematic pose; it does not calculate forces or deflection.
The balanced double-beam arrangement
Hiscox item 10 shows two balanced scale beams pivoted at their ends to T arms. Equal weights at different distances remain balanced on the centre line and at angles above or below it.
A historical kinematic curiosity
The viewer reproduces the connected topology and equal-weight condition only.
Selecting an illustrated posture
The position percentage locates the selected pose within the viewer; it is not a structural calculation.
Below, centred and above
The three selections correspond to the positions explicitly described in the historical caption.
What the plate does not quantify
The drawing does not provide dimensions, bearing friction, member stiffness, load limits or manufacturing tolerances.
Lever-paradox questions
Is this about a flexible pry bar?
No.
Does it calculate deflection?
No.
Are the weights load ratings?
No; they are equal diagram tokens.
Historical reference
- Hiscox, Mechanical Movements, item 10: lever paradox drawing and caption.
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