Release two tuning-fork tines and follow their shrinking deflections

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

The task separates flexible motion within one object from the whole object swinging. Two equal tines share a fixed U-shaped root and stem. An existing spacer holds their tips slightly apart. When that spacer releases them, the tines move inward toward their resting positions, pass through them and continue a few diminishing inward-and-outward deflections. The left and right motions mirror one another, while the root and mounting point stay fixed.

This is an exaggerated, slowed illustration of a decaying mode, not a recording of a real tuning-fork frequency. Do not assign a pitch, measured damping rate, exact oscillation count or audible tone. Keep deflections small enough that the tines never strike each other or become rubber strips. A short depiction can communicate diminishing amplitude without claiming real-time behavior or calibrated physics.

2. Authorized first frame

Create an original front-view schematic or use an image you have rights to adapt. Show the complete two-tine fork, its joined root and a stem held by a fixed support. A small spacer is already between the upper tips, holding them slightly farther apart than their illustrated resting positions. Both tines have the same visible length and width, with a clear gap and enough room on both sides for small deflections.

Put two subtle fixed reference marks behind the intended resting tip positions so changing displacement can be judged. Keep those marks separate from the metal. A visible hand or support grip can lift the spacer vertically out of contact without hiding the tips. Use a plain background and a steady front view; avoid polished reflections that make edges appear to move. The first frame should already explain the initial constraint instead of relying on an invisible strike.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the complete prompt, check the available settings and cost estimate, then submit only when ready. This page supplies text; it does not upload an image or start a generation.

4. Prompt and timing

Use the supplied schematic first frame. Keep the stem support and joined root fixed. Lift the existing spacer upward until it releases both tines, then keep it clear. As contact releases, the same two tines flex inward symmetrically toward their resting positions. Show a few small, clearly slowed inward-and-outward oscillations around those positions, with each subsequent visible extreme smaller than the preceding comparable extreme. The two tips move in opposite horizontal directions as mirror partners; do not make both sway sideways together. Preserve their lengths, widths and shared root, allowing slight bending along each tine rather than hinges appearing at the base. Keep the tips separated. Let the motion diminish into an approximately steady final gap. Do not strike again, add sound claims, duplicate tines or move the camera.

1. Opening: establish the spacer contact and slightly spread tips against the fixed background marks. The stem and root remain stationary before release.
2. Middle: remove the constraint and follow alternating inward and outward deflections. Compare outward extremes with earlier outward extremes and inward extremes with earlier inward extremes, rather than comparing unrelated frames.
3. Ending: let the illustrated amplitude diminish until the tips remain near their resting marks. Keep the spacer clear and the root fixed during the final quiet hold.

These beats are author suggestions, not exact model timing guarantees. Adapt their proportions to the clip length actually available.

5. Inspect the output

After inspecting your own output, record a time or frame, visible observation and pass, fail or inconclusive judgment for each condition. A convincing ending alone does not verify the preceding action.

• The same two tines retain their visible dimensions and remain joined to the original U-shaped root and fixed stem.
• The first recoil follows loss of spacer contact; the spacer then stays clear without repeatedly pushing or striking either tine.
• The tips move as mirror partners, inward together and outward together, rather than the whole fork swinging to one side.
• Comparable successive extremes become smaller around stable resting positions, without the neutral gap drifting across the frame.
• The tips remain separated, and the final hold approaches the same resting gap without a sudden shape replacement or renewed excitation.
• If blur or edge reflections prevent individual extremes from being compared, record inconclusive; a vibrating-looking smear does not establish decaying amplitude.

6. Fix one failure

• If both tines sway together, name their mirrored inward and outward movements and make the stem support more prominent in the input.
• If the motion begins before release, hold the starting pose briefly and make the spacer visibly contact both tips until withdrawal starts.
• If amplitude grows again, remove dramatic shaking or repeated-strike language. Ask for only one release and progressively smaller comparable extremes.
• If the tines bend like soft noodles, reduce the drawn starting spread and request subtle elastic flexure with stable width, length and root connection.
• If the tips collide or the gap vanishes, reduce the amplitude and enlarge the visible rest gap in the authorized schematic. Recheck the sequence after changing one condition.

7. Ending and limits

The endpoint shows the original fork near its resting shape, with the spacer clear and the base unchanged. This is a visual settling endpoint only. A still-looking tip does not prove that a real fork has stopped vibrating or that it would produce any particular sound; retain the illustration label when discussing the result.

Save your own generated result through the available result controls, together with the authorized input, exact prompt, settings and inspection notes.

No generated clip, audio sample, frequency analysis or physical vibration test is supplied. The slowed motion and amplitude emphasis are author choices to make the requested relationship visible. Do not use the clip as quantitative evidence of material stiffness or damping. Save the input, prompt and your observed sequence of extremes alongside the output.

The pendant-sway task moves a suspended object through a small connected swing. Here the root is fixed and two flexible parts deform in mirrored directions within one fork. The shared concern is continuity during settling, but whole-body swinging does not satisfy this two-tine deformation pattern.