Probably a clogged aerator. Remove the aerator and clean out the screen and reinstall.
No, Johnny Lever is not single.
refrigerator
I'm not sure in what sense that could be called a single lever...
Nut cracker is a second order lever because the nut(load) is in between.
In a single fixed pulley, you pull (apply force) straight down (pull down). In a first-class lever you push up (apply force) , but not push.
A bottle opener is a common household or kitchen tool that is a simple machine (a lever).
A lever.
screw, pulley, lever, wedge, inclined plane, gear
A single small lever
44
Single Pulley