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Work and Energy

m. m. m. Work and Energy. AP Physics B Lecture Notes. Work Done by a Constant Force. Work = Fd cos( q ). Fcos( q ). Work and Energy. F. q. d. Work = Fd cos( q ). Vector Dot Product. Work and Energy. Units of Work. System Unit of Work

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Work and Energy

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  1. m m m Work and Energy AP Physics B Lecture Notes

  2. Work Done by a Constant Force Work = Fd cos(q)

  3. Fcos(q) Work and Energy F q d Work = Fd cos(q) Vector Dot Product

  4. Work and Energy Units of Work SystemUnit of Work SI newton-meter Joule (J)

  5. Kinetic Energy Work Energy Theorem A net force acts on a moving object vf vi F m x Work and Energy

  6. vf vi F m x Work Energy Theorem The net work done on an object by a net force acting on it is equal to the change in kinetic energy of the object

  7. Work done against friction Friction acts on moving object m m d f Work and Energy

  8. Stretching a Spring Work and Energy

  9. x F F kx 0 x Work Work and Energy

  10. m Work done by gravity Object falls in a gravitational field mg h m Wg = mgh Work and Energy

  11. Work and Energy Work done by force (F) = Kinetic energy = Work done by gravity = Work done by a spring = Work done against friction = Work and Energy

  12. Gravity/Kinetic Energy Ball dropped from rest h v Work and Energy

  13. m Spring/Kinetic Energy Work done by a spring v m k x Work and Energy

  14. m Spring/Friction Work done by friction v = 0 m k x d = ? Work and Energy

  15. vo = 0 m m d h q V = ? h = d sin(q) Gravity/Kinetic Energy Work and Energy

  16. Work and Energy END

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