Cyrtomium falcatum. 1  Aptly named, Japanese holly fern produces fronds that do indeed resemble holly leaves with their glossy, deep green leathery appearance. 2  It needs moist but well-drained soil in a protected location to thrive. 3  It also makes for a good houseplant in climates where it isn't hardy.
A baseball bat is a third-class lever because the fulcrum is on the  end of one side, the effect force is in the middle, and the  resistant force, the load, is at the top.
A lever is a simple machine that is used with a fulcrum or pivoting point that multiplies the force exerted on a load. This is very beneficial when you want to have something done with minimal force. There are three classes in fulcrums. Class 1 is where the fulcrum is located between the load and the force applied.nother place where a wheel and axel could be used is a pulley. A pulley is a simple machine that consists of a wheel and axel or shaft and something of a belt. The wheel and axel or shaft could have a grove, but not in all cases.