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how does upthrust work

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1

how does upthrust work

  • when an object is submerged in fluids pressure of the fluid exerts a force on it from every direction

  • pressure increases with depth, larger at bottom

  • resultant force upwards

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2

elasticity

  • a force that stretches or compresses a spring does work, and e.p.e is stored in the spring, equal,

  • extension of an elastic object is directly proportional to the force applied, provide limit of proportionality isn’t exceeded

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3

levers

  • allow a larger force to act upon the load then is supplied by the effort, so easier to move larger and heavier objects

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4

high gear

  • driving gear larger than driven gear

  • high speed in driven

  • lo turning moment in driven

  • good for speeding up

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5

low gear

  • driving gear smaller than driven gear

  • lo speed in driven gear

  • high turning moment in driven gear

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6

more upthrust

  • object that’s less dense than fluid its paced in weighs less than the equivalent volume of fluid

  • means it displaces a volume of fluid that’s equal to its eight before its completely submerged

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7
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