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2. File:Billard Balls Chart (Polandball).png - Wikipedia

   en.wikipedia.org/wiki/File:Billard_Balls_Chart...

   Original file (887 × 575 pixels, file size: 22 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

3. Wikipedia : Featured picture candidates/Four pulleys.svg

   en.wikipedia.org/.../Four_pulleys.svg

   My recommendations: keep the lengths the same, adding pulleys each time and the depict weight rising successively higher off the ground.--HereToHelp 00:10, 25 March 2008 (UTC) More pulleys would not lift the weight higher, more pulleys would lift the weight less with the same amount of rope displacement (denoted s on the drawing).

4. Pulley - Wikipedia

   en.wikipedia.org/wiki/Pulley

   A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force. A pulley may have a groove or grooves between flanges around its circumference to locate the cable or belt. The drive element of a pulley system can be a rope, cable, belt, or chain.

5. File:Four pulleys.svg - Wikipedia

   en.wikipedia.org/wiki/File:Four_pulleys.svg

   An illustration showing how pulleys are used to obtain a mechanical advantage. Using additional pulleys decreases the force required but increases the distance required to raise a load the same amount. In each instance here the mechanical work done is the same, work being the product of force and distance. F Z × s = F L × h 10 cm × 100 N = 10 J

6. File:Conventional 18-wheeler truck diagram.svg - Wikipedia

   en.wikipedia.org/wiki/File:Conventional_18...

   Semi-trailer truck; Talk:Semi-trailer truck; User talk:H Padleckas; User talk:TomStar81/Archive 18; Wikipedia:Featured picture candidates/Diagram of a tractor trailer truck (or articulated lorry) Wikipedia:Featured picture candidates/October-2015; Wikipedia:Featured pictures/Diagrams, drawings, and maps/Diagrams; Wikipedia:Featured pictures ...

7. Cam and groove - Wikipedia

   en.wikipedia.org/wiki/Cam_and_groove

   Cam and groove fittings are commonly available in several materials, including stainless steel, aluminum, brass, and polypropylene. [2] Because there are no threads to become fouled, cam and groove couplings are popular in moderately dirty environments, such as septic tank pump trucks and chemical or fuel tanker trucks.

8. Belt (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Belt_(mechanical)

   Round belts are a circular cross section belt designed to run in a pulley with a 60 degree V-groove. Round grooves are only suitable for idler pulleys that guide the belt, or when (soft) O-ring type belts are used. The V-groove transmits torque through a wedging action, thus increasing friction.

9. File:MUTCD R5-2.svg - Wikipedia

   en.wikipedia.org/wiki/File:MUTCD_R5-2.svg

   Original file (SVG file, nominally 512 × 512 pixels, file size: 2 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.