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 makes work easier for use; it involves moving a load around a pivot using a force. Many of our basic tools use levers, including scissors, pliers, hammer claws, nut crackers and tongs. Lever first class , the pivot (fulcrum) is between the effort (force) and the load. Lever second class , the load is between the pivot and the effort (force) and Lever third class , the effort is between the pivot and the load. Levers classified by positions of the forces. Bones, ligaments, and muscles are the structures that form levers in the body to create human movement.