Term
| how do you calculate work? |
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Definition
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Term
| how to calculate efficiency? |
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Definition
effriciency = output work ---------------- X 100% input work |
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Term
| Why an incline plane makes it easier to move a crate into a truck... |
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Definition
| the inclined plane increases the force you exert three times. If the height of the incline does not change, increasing the length of the incline will increase the mechanical advanage. |
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Term
| What are the 6 simple machine's? |
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Definition
1. inclined plane
2. wedge
3. screws
4. levers
5. wheel & axle
6. pulley |
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Term
| how are the 6 simple mechine's used? |
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Definition
1. a ramp
2. you use an axe to cut wood
3. twist a screw into a peice of wood
4. the tip of the opener is under the lid of the can
5. a doorknob & a car's steering wheel
6. you pull down on the flag pole rope, and the flag moves up. |
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Term
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Definition
| the number of times a machine increases a force exertes on it. |
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Term
| if a machine advantage og 1, you can tell that the input and output forces are... |
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Definition
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Term
| machincal advantage of a wheel & axle, ramp, and lever: |
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Definition
-wheel & axle = Radiusof wheel/ Radius of axle
-ramp Length of incline/ Height of inlcine
-lever Distance from fulcrum to input force/ distance from fulcrum to output force |
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Term
| a steering wheel is an example of : |
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Definition
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Term
| a screwdriver is a wheel & axle because... |
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Definition
| the handle is the wheel and the objcect w/ the smaller radius is the axle |
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Term
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Definition
| when the object moves in the same direction in which the force is exerted. |
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Term
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Definition
| when you exert a force on an object that causes the object to move some distance. |
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Term
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Definition
| the amout of work you do when you exert a force of 1 Newton to move an object of a distance of 1 meter. |
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Term
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Definition
| the rate at which work is done |
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Term
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Definition
| a device that allows you to do work in an easier way |
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Term
| the force you exert on the machine is called? |
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Definition
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Term
| the force the machine exerts on an object is called the |
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Definition
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Term
| the input force times the input force is called the |
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Definition
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Term
| the output force times the output distance is called the |
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Definition
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Term
| Finding the ratio of output force to input force gives you the |
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Definition
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Term
| The _______________ if a machine compares to the output work to the input work |
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Definition
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Term
| An ________________ a flat sloped surface |
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Definition
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Term
| a ____________ is a device that is thick at one end tapers to a thinedge atthe other end. |
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Definition
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Term
| A ___________________ can be through of as an inclined plane wrapped around a cylinder |
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Definition
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Term
| A ______ is a rigid bar that is free to piviot or rotate on a fixed point |
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Definition
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Term
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Definition
| is a simple machine made of 2 circular or cylindrical object fastened together that roate about a common axis |
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Term
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Definition
| is a simple machine made of a grooved wheel with a rope or cable rapped around it |
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Term
| A machine that utilizes two or more simple machines |
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Definition
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