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A reel connected to the crankshaft has a notch in it to put a rope through. The rope is wound around the reel and pulled, starting the engine, but once the end of the pull is reached, it comes free, leaving a loose rope in the person's hand. If the engine fails to start on the first pull, the operator has to re-wind it by hand. [citation needed]
In mathematics and physics, the plate trick, also known as Dirac's string trick (after Paul Dirac, who introduced and popularized it), [1] [2] the belt trick, or the Balinese cup trick (it appears in the Balinese candle dance), is any of several demonstrations of the idea that rotating an object with strings attached to it by 360 degrees does not return the system to its original state, while ...
Embrace Life is a short British public information film made for the Sussex Safer Roads Partnership (SSRP) about the importance of wearing seat belts.Released on 20 January 2010 [1] and initially only shown in the local Sussex area, the short film became an international phenomenon after it was distributed on the internet, through social networking sites and YouTube, gaining over a million ...
Buckling a three-point seat belt. A seat belt, also known as a safety belt or spelled seatbelt, is a vehicle safety device designed to secure the driver or a passenger of a vehicle against harmful movement that may result during a collision or a sudden stop.
The centrepin reel (or centerpin, center pin, or float reel) is a single-action reel which runs freely enough on its axle ("centrepin"). The centrepin reel is the earliest fishing reel design invented by humans, and is historically and currently used for coarse fishing. Instead of a mechanical drag, the angler's thumb is typically used to ...
Belt friction is a term describing the friction forces between a belt and a surface, such as a belt wrapped around a bollard.When a force applies a tension to one end of a belt or rope wrapped around a curved surface, the frictional force between the two surfaces increases with the amount of wrap about the curved surface, and only part of that force (or resultant belt tension) is transmitted ...
A drop weight stringing machine. Drop weight stringing machines are inexpensive that use a weighted bar to achieve the desired string tension.Using only weight and simple laws of physics (torque = force x distance) they are very precise and also constant pull type of machines. [6]
A hose reel is a cylindrical spindle made of either metal, fiberglass, or plastic and is used for storing a hose. The most common styles of hose reels are spring driven (which is self retracting), hand crank, or motor driven. Hose reels are categorized by the diameter and length of the hose they hold, the pressure rating and the rewind method.