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Work, Energy, Power, Simple Machines

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Work, Energy, Power, Simple Machines

  1. 1. PROJECT INPHYSICS
  2. 2. SUBMITTED BY: Ferdinand L. Esguerra Simon O. Bautista Mark Nhiel D. Gregory Christian Eric Sumanguid Leuwell S. Avena
  3. 3. WORK
  4. 4. WORK Product of the force applied to a body and the displacement of the body in the direction of the applied force.
  5. 5. In symbols:where:W = workF = forced = displacement
  6. 6.  If the force applied makes an angle with the direction of motion, the equation used is:where:θ = is the anglebetween F and d
  7. 7. KINETIC ENERGY Is the energy in motionIn symbols:where:KE= kinetic energym= massv= velocity
  8. 8. POTENTIAL ENERGYIs the stored energy of position
  9. 9. GRAVITATIONAL POTENTIAL ENERGY The potential energy of a body as a result of its vertical displacementIn symbols: GPE = mghWhere:m= massg= is the acceleration due to gravityh= height
  10. 10. POWER
  11. 11. POWER Power is the rate at which energy is transferred, used, or transformed.In symbols:where:P = powerW= workt = ocity
  12. 12. SIMPLEMACHINES
  13. 13. SIMPLE MACHINES Is a mechanical device that multiplies, and changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that provide mechanical advantage.
  14. 14.  These simple machines fall into two classes: (I.) the inclined plane, wedge, screw characterized by the vector resolution of forces and movement along a line, and (II.) the lever, pulley, and wheel and axle are characterized by the equilibrium of torques and movement around a pivot.
  15. 15. INCLINED PLANE An inclined plane is a straight ramp and is used for moving loads up and down the hill It is a flat surface that lies at an angle relative to level ground used to form a ramp to raise and lower a load.
  16. 16. WEDGE A wedge is a triangular shaped round tool and is used to separate two objects or portions of an object, lift an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces
  17. 17. SCREW A screw is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force. The most common form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.
  18. 18. LEVER A lever is constructed from a beam attached to ground by a hinge, or fulcrum. A lever amplifies an input force to provide a greater output force, which is said to provide leverage.
  19. 19. PULLEY A pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power.
  20. 20. WHEEL AND AXLE A wheel and axle is a simple machine made up of two circular objects of different size. The axle (a small wheel) is attached to the center of a larger wheel. All wheels need an axle. The wheel and axle must move together to be a simple machine. A wheel and axle lifts or moves loads.

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