{"job_id":"anim-job-91706578-272b-4403-b29c-00997106e18c","request_id":"test-physics-circular-1b2ba770-6450-4b1c-a815-8b28db3d7c87-1778704510421","status":"complete","asset":{"primary_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-91706578-272b-4403-b29c-00997106e18c/walkthrough.mp4","thumbnail_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-91706578-272b-4403-b29c-00997106e18c/thumb.jpg","transcript_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-91706578-272b-4403-b29c-00997106e18c/transcript.vtt","interactive_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-91706578-272b-4403-b29c-00997106e18c/index.html","scenefile_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-91706578-272b-4403-b29c-00997106e18c/scene-source.json","duration_seconds":15,"byte_size":554370,"renderer":"html_three_js_local","parameters":{"style":"auto","executor":"native_render_executor","localPath":"/app/storage/assets/anim-job-91706578-272b-4403-b29c-00997106e18c","interactivity":"none","renderer_style":"three_js","durationSeconds":15,"render_manifest":{"jobId":"anim-job-91706578-272b-4403-b29c-00997106e18c","request":{"gap":{"topic":"centripetal-vs-centrifugal","severity":"dangerous","error_type":"wrong_assumption","memory_state":"fragile","display_topic":"Centripetal Force in Circular Motion","common_wrong_answer":"An object in circular motion has centrifugal force pushing it outward.","confidence_at_error":"high","correct_understanding":"Centripetal force always points inward toward the center; centrifugal is a pseudo-force in the rotating frame only."},"target":{"style":"auto","render":{"fps":30,"format":"mp4","resolution":"1920x1080","include_thumbnail":true,"include_transcript":true},"audience":{"tone":"neutral_instructional","grade":"11","language":"en"},"interactivity":"none","duration_seconds":15},"context":{"chapter":{"name":"Laws of Motion","ncert_class":11,"ncert_chapter_number":5},"sub_topics":[{"topic":"Circular Motion","key_concepts":["centripetal acceleration","centripetal force","uniform circular motion"]}]},"metadata":{"priority":"normal"},"exam_type":"neet","asset_type":"simulation","request_id":"test-physics-circular-1b2ba770-6450-4b1c-a815-8b28db3d7c87-1778704510421","subject_area":"physics"},"renderer":"html_three_js_local","storyboard":{"beats":[{"label":"Topic","visual":"Show the topic title and the key physical context.","narration":"Centripetal Force in Circular Motion"},{"label":"Mistake","visual":"Show the wrong approach and why it seems plausible.","narration":"An object in circular motion has centrifugal force pushing it outward."},{"label":"Correction","visual":"Show the right approach step by step.","narration":"Centripetal force always points inward toward the center; centrifugal is a pseudo-force in the rotating frame only."},{"label":"Concept","visual":"Highlight the key formula and the governing relationship.","narration":"centripetal acceleration. centripetal force. uniform circular motion"}],"title":"Centripetal Force in Circular Motion","sceneCode":"<!doctype html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"utf-8\"/>\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/>\n  <title>Centripetal Force: Inward, Not Outward</title>\n  <style>\n    :root{--bg:#0f1418;--panel:#182228;--line:#2e3e46;--accent:#e5ba67;--text:#f4f1ea;--muted:#c8d4da;--blue:#63b3ff;--green:#87e8a8;--red:#de7f76;}\n    *{box-sizing:border-box;}\n    body{margin:0;font-family:\"Plus Jakarta Sans\",\"Manrope\",ui-sans-serif,system-ui,sans-serif;background:radial-gradient(120% 90% at 20% -5%,#24343d 0%,var(--bg) 55%);color:var(--text);}\n    main{min-height:100vh;display:grid;grid-template-columns:minmax(300px,380px) 1fr;}\n    aside{border-right:1px solid var(--line);background:linear-gradient(180deg,rgba(31,46,53,.86),rgba(24,34,40,.92));padding:24px;overflow:auto;backdrop-filter:blur(6px);}\n    section{padding:24px;display:grid;place-items:center;}\n    h1{margin:0 0 10px;font-size:1.65rem;line-height:1.15;}\n    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#465a64;background:rgba(9,14,18,.58);font-size:0.8rem;color:var(--muted);backdrop-filter:blur(4px);}\n    @media(max-width:900px){main{grid-template-columns:1fr;}aside{border-right:0;border-bottom:1px solid var(--line);}}\n  </style>\n</head>\n<body>\n<main>\n  <aside>\n    <h1>Centripetal Force</h1>\n    <p class=\"sub\">Inward attraction, not outward repulsion</p>\n    <p class=\"formula\">F<sub>c</sub> = m·v²/r (toward center)</p>\n    <label class=\"control\"><span>Speed: <strong id=\"v-speed\">1.0</strong> m/s</span><input id=\"c-speed\" type=\"range\" min=\"0.5\" max=\"3.0\" step=\"0.1\" value=\"1.0\"/></label>\n    <label class=\"control\"><span>Radius: <strong id=\"v-radius\">100</strong> px</span><input id=\"c-radius\" type=\"range\" min=\"50\" max=\"180\" step=\"10\" value=\"100\"/></label>\n    <label class=\"control\"><span>Show Mistake: <strong id=\"v-mistake\">OFF</strong></span><input id=\"c-mistake\" type=\"checkbox\" value=\"0\" style=\"width:auto;margin:4px 0;\"/></label>\n    <ul>\n      <li><strong>✓ Truth:</strong> Force points inward</li>\n      <li><strong>✗ Mistake:</strong> \"Centrifugal\" pushes out</li>\n      <li><strong>Key:</strong> No outward real force in inertial frame</li>\n      <li><strong>Why:</strong> Inertia is not a force</li>\n    </ul>\n  </aside>\n  <section>\n    <div class=\"stage\" id=\"stage\">\n      <div class=\"legend\" id=\"legend\">Ready</div>\n      <canvas id=\"sim-cv\" style=\"position:absolute;inset:0;width:100%;height:100%;\"></canvas>\n    </div>\n  </section>\n</main>\n<script>\nconst controls = [{\"key\":\"speed\",\"label\":\"Speed\",\"min\":0.5,\"max\":3.0,\"step\":0.1,\"value\":1.0,\"units\":\"m/s\"},{\"key\":\"radius\",\"label\":\"Radius\",\"min\":50,\"max\":180,\"step\":10,\"value\":100,\"units\":\"px\"},{\"key\":\"mistake\",\"label\":\"Show Mistake\",\"min\":0,\"max\":1,\"step\":1,\"value\":0,\"units\":\"\"}];\nfor(const c of controls){\n  const inp=document.getElementById('c-'+c.key);\n  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trail(points,color){\n    if(points.length<2)return;\n    ctx.strokeStyle=color;ctx.lineWidth=2;ctx.globalAlpha=0.35;\n    ctx.beginPath();ctx.moveTo(points[0].x,points[0].y);\n    for(let i=1;i<points.length;i++)ctx.lineTo(points[i].x,points[i].y);\n    ctx.stroke();ctx.globalAlpha=1;\n  }\n  \n  function arrow(x1,y1,x2,y2,color,w){\n    const dx=x2-x1,dy=y2-y1,l=Math.sqrt(dx*dx+dy*dy);\n    if(l<2)return;\n    const nx=dx/l,ny=dy/l,s=12;\n    ctx.strokeStyle=color;ctx.lineWidth=w||2;\n    ctx.beginPath();ctx.moveTo(x1,y1);ctx.lineTo(x2,y2);ctx.stroke();\n    ctx.fillStyle=color;ctx.beginPath();ctx.moveTo(x2,y2);\n    ctx.lineTo(x2-s*nx+s*0.4*ny,y2-s*ny-s*0.4*nx);\n    ctx.lineTo(x2-s*nx-s*0.4*ny,y2-s*ny+s*0.4*nx);ctx.fill();\n  }\n  \n  function tick(ts){\n    const dt=Math.min(0.04,(ts-lastTs)/1000);lastTs=ts;\n    cycleTime+=dt;\n    const W=cv.width,H=cv.height;\n    const centerX=W*0.35;\n    const centerY=H*0.5;\n    \n    // Read sliders\n    const speedVal=Number(document.getElementById('c-speed').value);\n    const radiusVal=Number(document.getElementById('c-radius').value);\n    const showMistakeVal=document.getElementById('c-mistake').checked;\n    \n    // Physics: update angle based on speed\n    const angularVel=speedVal/(radiusVal/50);\n    angle+=(angularVel*dt);\n    if(angle>Math.PI*2)angle-=Math.PI*2;\n    \n    // Position on circle\n    const x=centerX+radiusVal*Math.cos(angle);\n    const y=centerY+radiusVal*Math.sin(angle);\n    \n    // Velocity (tangent)\n    const vx=-radiusVal*angularVel*Math.sin(angle);\n    const vy=radiusVal*angularVel*Math.cos(angle);\n    \n    // Trail\n    trailPoints.push({x,y});\n    if(trailPoints.length>80)trailPoints.shift();\n    \n    // Centripetal acceleration magnitude\n    const accelMag=(speedVal*speedVal)/radiusVal;\n    \n    // Impact ring pulse\n    impactRing=Math.max(0,impactRing-dt*4);\n    \n    // Clear\n    ctx.clearRect(0,0,W,H);\n    \n    // === BACKGROUND LAYER ===\n    ctx.fillStyle='rgba(15,20,24,0.3)';\n    ctx.fillRect(0,0,W,H);\n    \n    // === MAIN ACTION LAYER ===\n    \n    // Draw orbit (faint circle)\n    ctx.strokeStyle='rgba(99,179,255,0.2)';\n    ctx.lineWidth=1;\n    ctx.beginPath();\n    ctx.arc(centerX,centerY,radiusVal,0,Math.PI*2);\n    ctx.stroke();\n    \n    // Draw trail\n    trail(trailPoints,'rgba(135,232,168,0.4)');\n    \n    // Draw center point\n    ctx.fillStyle='#e5ba67';\n    ctx.beginPath();ctx.arc(centerX,centerY,4,0,Math.PI*2);ctx.fill();\n    glowDot(centerX,centerY,3,'rgba(229,186,103,ALPHA)',0.5);\n    \n    // Draw object\n    ctx.fillStyle='#63b3ff';\n    ctx.beginPath();ctx.arc(x,y,8,0,Math.PI*2);ctx.fill();\n    \n    // === VECTOR ANNOTATIONS LAYER ===\n    \n    if(!showMistakeVal){\n      // CORRECT: Show centripetal force (inward)\n      const fx=centerX-x;\n      const fy=centerY-y;\n      const flen=Math.sqrt(fx*fx+fy*fy);\n      if(flen>0.1){\n        const fnx=fx/flen,fny=fy/flen;\n        const fscale=accelMag*12;\n        arrow(x,y,x+fnx*fscale,y+fny*fscale,'#87e8a8',3);\n      }\n      \n      // Velocity vector (tangent)\n      const vlen=Math.sqrt(vx*vx+vy*vy);\n      if(vlen>0.1){\n        const vnx=vx/vlen,vny=vy/vlen;\n        arrow(x,y,x+vnx*25,y+vny*25,'#63b3ff',2);\n      }\n      \n      // Label\n      ctx.fillStyle='#87e8a8';\n      ctx.font=Math.round(H*0.045)+'px sans-serif';\n      ctx.textAlign='left';\n      ctx.fillText('Centripetal Force →',W*0.35,H*0.08);\n      ctx.fillStyle='#c8d4da';\n      ctx.font=Math.round(H*0.035)+'px sans-serif';\n      ctx.fillText('(Always toward center)',W*0.35,H*0.12);\n    }else{\n      // MISTAKE: Show wrong outward force\n      const fx=x-centerX;\n      const fy=y-centerY;\n      const flen=Math.sqrt(fx*fx+fy*fy);\n      if(flen>0.1){\n        const fnx=fx/flen,fny=fy/flen;\n        const fscale=accelMag*12;\n        arrow(x,y,x+fnx*fscale,y+fny*fscale,'#de7f76',3);\n      }\n      \n      // Also show correct (faded)\n      const fx2=centerX-x;\n      const fy2=centerY-y;\n      const flen2=Math.sqrt(fx2*fx2+fy2*fy2);\n      if(flen2>0.1){\n        const fnx2=fx2/flen2,fny2=fy2/flen2;\n        const fscale2=accelMag*12;\n        ctx.globalAlpha=0.3;\n        arrow(x,y,x+fnx2*fscale2,y+fny2*fscale2,'#87e8a8',2);\n        ctx.globalAlpha=1;\n      }\n      \n      // Labels\n      ctx.fillStyle='#de7f76';\n      ctx.font=Math.round(H*0.045)+'px sans-serif';\n      ctx.textAlign='left';\n      ctx.fillText('❌ Wrong: \"Centrifugal\" →',W*0.35,H*0.08);\n      ctx.fillStyle='#c8d4da';\n      ctx.font=Math.round(H*0.03)+'px sans-serif';\n      ctx.fillText('(Pseudo-force in rotating frame only)',W*0.35,H*0.12);\n      ctx.fillStyle='rgba(135,232,168,0.4)';\n      ctx.font=Math.round(H*0.035)+'px sans-serif';\n      ctx.fillText('✓ Correct: inward (faded)',W*0.35,H*0.16);\n    }\n    \n    // Velocity vector (always shown)\n    const vlen=Math.sqrt(vx*vx+vy*vy);\n    if(vlen>0.1){\n      const 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