What does it mean to say screw you?
(vulgar) A slightly less offensive version of fuck you. You'll just lie in your bed all day rather than help us? Well, screw you. Screw you—go annoy someone else! Screw you!
Screwed over means someone does something to another person to leave them in a bad situation. For example, someone lying about another person or telling on another person so that they get in trouble is getting screwed over.
- Gears are also important simple machines. A gear is just a wheel with teeth, sometimes called a cog. To do any work with a gear, you need to have at least two cogs with their teeth fitting into each other. Because the teeth fit together, when you turn one gear, the other one turns too!
- windmill, fan (wheel and axle)
- roller coaster, stairs (inclined plane)
- sledge hammer, chisels (wedge)
- door lock, drill (screw)
- flag pole, window blinds (pulley)
- seesaw, rake (lever).
- Flag poles, fishing rods, cranes, window blinds, and wishing wells all have pulleys. The more pulleys that are rigged together, the more effective a pulley system can be. Pulleys, like all simple machines, sacrifice distance for force. The more distance the effort moves, the less force is needed to lift the load.
screw as a term for a prison guard is based on the fact that screw was originally slang for "key." One of the most important functions of a prison guard, or turnkey, as he's often called, is to see that prisoners are locked up at the appropriate times -- and that involves turning the "screw."
- screw as a term for a prison guard is based on the fact that screw was originally slang for "key." One of the most important functions of a prison guard, or turnkey, as he's often called, is to see that prisoners are locked up at the appropriate times -- and that involves turning the "screw."
- The head of an axe is a wedge working in a different way. An axe forces wood apart in two ways. The handle works like a lever, magnifying the force you apply. The wedge-shaped blade concentrates the force over a smaller area, increasing the pressure on the wood and splitting it apart.
- The fulcrum/pivot point is the part of the lever that does not move, its in the middle. The resistance, or the downwards force, is the weight of the person you are trying to lift is at one end. The work, force applied to the lever, is the person sitting on the other end of the seesaw.
Machines that use screws to push against other objects are called presses. A press is used to make cider or wine by squashing fruit to extract the juice from it. Printing presses were also used to make books. The up and down force generated by a screw can also be used to hold things together.
- Wood screws are probably the most commonly-used mechanical woodworking fasteners. They are used primarily for connecting wood to wood and are renowned for the clamping force that they provide to strengthen a joint. They can also be used to attach hinges, hardware, locks and other non-wood objects.
- Usually the term refers to the six classical simple machines which were defined by Renaissance scientists:
- Wheel and axle.
- Inclined plane.
- Lever, simple machine consisting of a rigid bar that rotates about a fixed point, called a fulcrum. Levers affect the effort, or force, needed to do a certain amount of work, and are used to lift heavy objects.
Updated: 28th September 2018