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The concept of work done is fundamental in physics. Whether you are studying physics as a pastime or preparing for tests such as the MCAT, AP Physics, GCSE, or IB, you must track your progress. You can test your concepts in this Work done quiz by taking this online practice quiz.
Revision notes on 3.6.1 Work Done for the OCR A Level Physics syllabus, written by the Physics experts at Save My Exams.
The vehicle starts from rest at A and is hauled up to B by a motor. It takes 15.0 S to reach B, at which point its speed is negligible. Complete the box in the diagram below, which expresses the conservation of energy for the journey from A to B. Useful work done by motor. .................................
Work Done is a quantity which represents energy transferred between systems and is only done when a force moves something. Express mathematically, Work Done = Force × Distance moved in direction of Force. The SI unit for Work Done is the Joule (J), same as energy.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Use our revision notes to user and understand the work done equation and compare it to energy transferred. Learn more.
WW = ∆E = F × d. where F = force (N), d = displacement (m) Note: Work is a scalar quantity. The unit of work is the Joule (J) Consider a force that acts at an angle. For instance, when a block is being pulled with tension T by a string whose angle of inclination is θ to the horizontal. Tension T.
