Work Done & Friction (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Define friction
Define friction
Force between surfaces in contact trying to move past each other
In what direction does friction act?
In what direction does friction act?
Opposite to motion
Energy transformation by friction
Energy transformation by friction
Transforms to heat
Effect of friction on temperature
Effect of friction on temperature
Temperature of object and surface increases
Define work done
Define work done
Measurement of energy required to move an object
Work done equation
Work done equation
Unit of work done ()
Unit of work done ()
J (joules)
Unit of force () in work equation
Unit of force () in work equation
N (newtons)
Unit of distance () in work equation
Unit of distance () in work equation
m (metres)
Why does heavier person need more energy to climb?
Why does heavier person need more energy to climb?
They weigh more (greater force in )