{"product_id":"rotating-system-on-air-bed-115-v-50-60-hz","title":"Rotating System on Air Bed (115 V, 50\/60 Hz)","description":"\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003eApparatus for investigating frictionless rotation. A small rotating disc with a protractor scale supports a cross bar to which weights can be attached. The disc is supported by a bed of air in which its axis is centred. A driving weight is suspended from a hook at the end of a string that is passed over a single pulley on one side and a multiple pulley on the other. The rotation is very slow and can be measured using a stopwatch by hand. Alternatively, a digital timer may be used. This can be started by a mechanism that is supplied with the kit and halted by a signal from a laser reflection sensor when the wheel passes through angle zero.\u003cbr\u003e\u003cstrong\u003eExperiment topics:\u003c\/strong\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\t\tRotational motion: uniform and under constant acceleration\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tNewton's equations of motion for rotational motion\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMoment of inertia and torque\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMoment of inertia as determined by experiment\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tSimple harmonic motion of rotating objects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\t\tProtractor scale: 0 – 360°\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tScale divisions: 1°\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tLength of cross bar: ca. 440 mm\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tRadii of perforations: 30 – 210 mm\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tSeparation of perforations: 20 mm\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tRadii of multiple pulley: 5.0 mm\/10.0 mm\/15.0 mm\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMoment of inertia of\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tdisc with cross bar: 0.16 g m2 approx.\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMaximum moment of inertia: 7.1 g m2 approx.\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMinimum driving torque: 0.05 mN m approx.\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tMaximum driving torque: 0.60 mN m approx.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eContents:\u003c\/strong\u003e\n\u003cul\u003e\n\t\u003cli\u003e\n\t\t1 Air bed\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Rotating disc with cross bar\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Multiple pulley\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Release mechanism\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t2 S-shaped hooks 1.00g\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 S-shaped hook 2.00 g\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Set of weights (2x 12.5 g, 2x 25 g, 2x 50 g)\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Compressor for connection to mains\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Silicon tubing with by-pass valve (not illustrated)\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Pulley\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Stand rod with 3 securing screws and 2 screws for levelling\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Stand rod with 2 securing screws\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Stand rod, 250 mm\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Levelling disc\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t1 Roll of cotton thread\u003c\/li\u003e\n\u003c\/ul\u003e 28 x 13 x 11 in  \u003cli\u003e\n\t\tSecure online payment with SSL\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tExpert advice\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tFinancing available\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tEasy returns \u0026amp; exchanges\u003c\/li\u003e\n\t\u003cli\u003e\n\t\tInternational shipping available\u003c\/li\u003e\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eUPC: Not Specified\u003c\/li\u003e\n\u003cli\u003eGTIN\/ITF Barcode: Not Specified\u003c\/li\u003e\n\u003cli\u003eUnits of Measure: Not Specified\u003c\/li\u003e\n\u003cli\u003eOverall Product Length: Not Specified in\u003c\/li\u003e\n\u003cli\u003eOverall Product Width: Not Specified in\u003c\/li\u003e\n\u003cli\u003eOverall Product Height: Not Specified in\u003c\/li\u003e\n\u003cli\u003eWeight Capacity: Not Specified lbs\u003c\/li\u003e\n\u003cli\u003eActual Product Weight: 18.08\u003c\/li\u003e\n\u003cli\u003eProduct Assembly: Not Specified\u003c\/li\u003e\n\u003cli\u003eProduct Installation: Not Specified\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Not Specified\u003c\/li\u003e\n\u003cli\u003eCase QTY: Not Specified\/case\u003c\/li\u003e\n\u003cli\u003eCase Weight: Not Specified\u003c\/li\u003e\n\u003cli\u003eShips Via Freight: Not Specified\u003c\/li\u003e\n\u003cli\u003eProposition 65 Warning: Not Specified\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3B Scientific","offers":[{"title":"Default Title","offer_id":48198000476352,"sku":"1000781","price":1630.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1403\/8729\/files\/1776959375554.jpg?v=1776959378","url":"https:\/\/tensnet.com\/products\/rotating-system-on-air-bed-115-v-50-60-hz","provider":"TENSnet","version":"1.0","type":"link"}