Show the pull distance beside the force advantage

Name the explanatory job of the shot

A fictional museum film introduces how a simple mechanism changes a task. The first storyboard shows only the rising object and captions the sequence as an energy-saving invention. It is a persuasive image, but the proposed narration gives the diagram a claim that its teaching model does not establish. The creative team needs to revise the shot and its explanation together, rather than attach a cautionary footnote to an unchanged visual story.

The intended audience is encountering the principle for the first time. The film should let visitors follow the relationship being illustrated, not merely recognize an object from a textbook. Write the shot’s purpose on the storyboard: compare the two actions in the supplied model. Keep that purpose separate from a promotional claim about a real product or a demonstration of a museum installation.

The asset is an authored diagram. It is not a recording of equipment, a construction plan or an instruction for moving a load. Avoid adding realistic hardware details simply to make the image look authoritative. Those details could suggest a physical configuration has been assessed when this exercise has only defined a mathematical comparison.

Keep the complete model visible

Ideal quasistatic model: massless, inextensible rope; frictionless, massless pulleys. Rope runs from a fixed anchor down around a moving pulley, up over a fixed redirect, then down to its free end. Upper reference height H; moving height y is upward, free-end distance z from the redirect is downward. Constant wrap length C gives L = 2(H − y) + z + C, so Δz = 2Δy. Two equal tensions support the 100 N load: input = 50 N. Lifting 0.4 m requires 0.8 m input travel. Input work 50 N × 0.8 m = 40 J; output 100 N × 0.4 m = 40 J, also the direct-lift work. Narration: “Less ideal input force, with more input travel; not less work.”

The supporting runs are vertical. No physical operating performance is established.

Use the complete exhibit as the content master. The diagram labels and narration should be edited from the same master rather than being maintained as separate interpretations. A writer may shorten a sentence for delivery, but should preserve its intended contrast. A designer may change the illustration style without silently changing which action a label describes.

The source supports the stated ideal model, not a performance claim for an object shown elsewhere in the exhibition. If a sponsor’s product appears nearby, make the separation explicit in the creative brief. An invented numerical illustration cannot become evidence for that product merely because the two are placed on the same screen.

Choose a wider explanation over a tighter hero image

The first framing option stays close to the rising object. It gives that object visual prominence and leaves more room for a large headline. However, the crop removes the counterpart needed for the chosen explanation. A small arrow entering from outside the frame would not show the full authored relationship. The film would ask narration to repair an image designed around a different story.

The second option shows both actions together, using distinct labels and an uncluttered background. Choose this option for the fictional brief. The cost is a less dramatic close-up: the featured object occupies less of the image, and the headline must give way to explanatory space. That is an intentional art-direction tradeoff, not a defect to conceal by enlarging the object again.

Keep the comparison on screen as one composed shot rather than cutting between unrelated close-ups. This preserves the relationship the storyboard is trying to explain. It does not establish a universal presentation rule or a required reading duration. If the director later prefers separate shots, that is a revised treatment whose explanatory connections need to be designed deliberately.

Use visual emphasis to guide attention without erasing context. A restrained highlight can identify the part currently discussed while the other part remains visible. Avoid a celebratory saving badge, a battery icon or another graphic that revives the rejected energy-saving story. The revised narration and the graphic language should agree about what the illustration means.

Deliver a coherent storyboard and narration pair

Prepare a comparison sheet containing the original crop, the selected wider composition and the replacement narration. Mark the old headline as superseded. The animator should not need to infer why the object is now smaller or why an apparently attractive phrase has disappeared. Those choices follow the agreed explanatory purpose, not an arbitrary preference for a less polished image.

Add a content check at the animatic stage: ask a reviewer to describe what the two illustrated actions are doing and what the film is claiming. Compare that description with the intended explanation. This is a way to find a possible misunderstanding, not a measured learning-effect study. Do not report a successful informal review as evidence of audience comprehension in general.

Preserve the same relationship in the thumbnail and shorter exhibition loop. If a derivative has no room for the explanation, choose a neutral identifying image rather than retaining the old misleading headline. A shorter asset may serve a different purpose, but it should not inherit a claim rejected during development of the longer film.

The finished deliverable is a wider storyboard and a matched narration that retain the comparison while giving up some hero-image impact. Actual mechanism design and operating performance remain outside the brief. The creative team has improved what the film says and shows without pretending that its diagram certifies any real machine.

Make the reasoning concrete.

A tight hero image conflicts with the comparison the exhibit intends to teach.

Choose the wider composition and document its deliberate visual tradeoff.

Take the questions into your next brief.

Use these prompts in your own notes. Nothing is submitted from this page.

1. Purpose

   What comparison should the shot explain?

2. Model

   Can the complete numerical exhibit be reconstructed?

3. Framing

   Are both authored actions visible together?

4. Narration

   Does the replacement line agree with the selected shot?

5. Derivatives

   Could a short version revive the rejected headline?

Watch for the wrong conclusion.

• Preserving a dramatic crop after changing the explanation.
• Using a graphic badge to revive the rejected claim.
• Leaving superseded narration in a shorter derivative.

Sources & scope

The exhibition and numerical comparison are fictional. Only arithmetic was executed; no equipment or physical installation was tested.

• 9.3 Simple Machines →Primary physics textbook · Supports: Ideal force–distance exchange.