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- 1Centripetal forceThe inward force needed to make an object move in circles
- 2More centripetal force is needed if...1. Mass is increased
2. Speed of object is increased
3. Radius of circle is reduced - 3The Elastic LimitThe elastic limit is the point beyond which the material you are stretching becomes permanently stretched so that the material does not return to its original length when the force is removed.
- 4Spring ConstantLoad divided by the extension
- 5PressureForce Division ÷ area
OR
Density × Gravity × Height - 6Mercury BarometerThe mercury tube is inverted in a mercury-filled container so that the sealed end of the tube has a vacuum. The height of the mercury column inside the glass tube will change according to the atmospheric pressure. Because of this change, the pressure exerted by the mercury column will be equal to the pressure exerted by the atmosphere on the surface of the mercury reservoir. For example, if the atmospheric pressure is higher than the pressure exerted by the mercury column, the mercury level inside the tube will rise. If the atmospheric pressure is lower than the weight of the mercury column, the level will fall.
- 7ManometerManometer is a device, which can be used to measure pressure. It is an equipment consisting of a “ U” shaped tube with thin arms. The tube is open to the air in both sides, and it is filled with liquid. Usually it is filled with mercury because of its high density. The height difference between the liquid in two arms is measured, and from it, the pressure difference can be calculated.
- 8Difference between Manometer and Barometer•Barometer is a type of close-end manometer.
•Barometer is specially designed to measure the atmospheric pressure, whereas manometer can also be used to measure the pressures, which are lower than atmospheric pressure.
•In a manometer, both ends of the tube are open to outside (some may have a one closed end), whereas in the barometer one end of the glass tube is sealed and it contains a vacuum.
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- Fichas sobre Sin título, creado por Tanisha Narayan el 17/11/2014.
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- Tanisha Narayan
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