A crane with a 10 foot boom must lift a load of 600 poundsIf the distance from the effort to the fulcrum is 5 feet, how much effort is needed to lift the load?
Balance torque to find effort: Fxd WxL F5 60010 F 6000/5 1200 lbs of effort.
Sparks are just heated and glowing media that's heated by the flowing currentThe most spectacular sparks are lightening, which are just current heated airSo if a current passes through any medium and that medium heats up into glowing, that is a form of sparksThe more conventional spark is of course in airBut I've seen cardboard spark when used as dielectric separators in a home made capacitorSo, sure, if we define a spark as a medium that heats up and glows momentarily from an electrical current, pretty much anything that can carry a current will spark given the right conditions.
