Karteikarten
Inclined planes
Karten in diesem Stapel (20)
- 1Inclined PlanesHamza Ahmed
Year 8 - 2What are inclined planes or ramps?A sloping ramp up which heavy loads can be lifted.
- 3What do ramps do?It makes us use much less force to do
a very difficult task but with more distance to cover. - 4What is an example of a ramp?A winding road up a hill, it makes the journey much safer when going down but increases distance.
- 5What are wedges?A piece of wood, metal, etc. having one thick end and a thin, sharp edge, which drives between an object to separate it.
- 6What are wedges used for?They're used for splitting objects, like cutting down trees or biting into an apple.
- 7What are some examples of wedges?
- 8What makes a wedge more productive?The sharper and the longer it is
- 9How do you work out the mechanical advantage of a ramp?Mechanical advantage=
Length of slope
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height of slope - 10A crate on a 10 m ramp is pushed into a doorway 2 m above the ground. What is the mechanical advantage10 ÷ 2 = 5
Mechanical advantage = 5 - 11What are zips?A simple machine consisting of two strips of metal or plastic with interlocking projections.
- 12What are some examples of zips?Clothing, purses and wallets
- 13How do zips work?A central wedge unlatches the teeth as the zip is undone and side wedges force the teeth together when the zip is done.
- 14What are screws?A spiral shaped inclined plane
- 15What are some types of screws?Wood screws
Air propeller screws
Boat propeller screws
- 16What are they used for?Wood screws are for cutting timber
Air propeller screws are for cutting air
Boat propeller screws are for cutting water - 17How do screws work?As a screwdriver turns a screw, the material moves a long the spiral ramp. The spiral is called the thread.
- 18What is a small pitch?When the threads are much closer to each other, needing more turns, less force.
- 19What is a large pitch?When there's a lot of space between the threads, less turns, more force.
- 20The EndThank You
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- Flashcards on inclined planes
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