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| is motivated purely by curiosity. |
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| experiments are aimed are trying to find something useful. |
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| invention of a new process or machine that makes life better or makes a job easier. It is often the result of applied science. |
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| Invented the adding machine...technology |
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| Electronic Numerical Integrator and Computer....invented by John Eckert and John Mauchly. It used 18,000 vacuum tubes. |
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| created to replace the vacuum tube. |
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| discovered x-rays by accident when passing electricity through a tube filled with gas. |
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| is a device that reduces the amount of force needed to perform a task or changes the direction of a force. |
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| is a push or a pull that changes the motion of an object. |
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| 6 kinds of simple machines |
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Definition
| Lever, Wheel and Axle, pulley, incline plane, wedge, and the screw. |
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| magnifies force or motion |
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| the fixed point around which the rigid bar rotates. |
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| the force being applied to the lever. |
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| the weight being lifted by the lever. |
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| the bar, the fulcrum, the effort, and the resistance. |
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| the amount by which force or motion is magnified in a simple machine. |
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| Mechanical Advantage Formula |
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Definition
| MA=(distance from F to Effort)/(distance from F to Resistance). |
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Definition
| the fulcrum is placed between the effort and the resistance. |
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Definition
| fulcrum is at one end of the lever and the resistance is between the fulcrum and the effort. |
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Definition
| the fulcrum is at one end of the bar and the effort is between the fulcrum and the resistance. |
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| the length of a straight line that travels from one side of a circle to the other while passing through the center of the circle. |
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| Equation for the Mechanical Advantage of a wheel and axle. |
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Definition
| Mechanical Advantage or MA= (diameter of the wheel)/(diameter of the axle. |
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| Every time you add a pulley |
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Definition
| it becomes easier to pull something |
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| has a grooved wheel that rotates freely on a frame. |
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| the frame that the pulley rotates around. |
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| a fixed pulley and at least one moveable pulley |
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| Mechanical Advantage for incl. plane |
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Definition
| MA= length of the slope/height. |
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| it is a triangle that magnifies the force being applied. examples: ax, wedge for wood splitting, possibly a nail. |
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| looks like two wedges stuck together. |
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| MEchanical Advantage of a wedge- |
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Definition
| MA= lenght of slope/height |
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Definition
| an inclined plane (threads) wrapped around the axle of a wheel and axle. |
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| the vertical distance between the threads |
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| Mechanical Advantage of a screw |
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Definition
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Definition
| the distance around a circle. |
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