Work & Simple Machines

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Across
  1. 2. States that when work is done on a system, a change in energy occurs.
  2. 3. A machine consisting of two or more simple machines that are connected so that the resistance force of one machine becomes the effort force of the second machine.
  3. 6. The transfer of energy that occurs when a force is applied through a distance; equal to the product of the system's displacement and the force applied to the system in the direction of displacement.
  4. 7. The ratio of resistance force to effort force.
  5. 9. The ratio of output work to input work.
  6. 10. Unit of power; 1 J of energy transferred in 1 second.
  7. 12. The combination of force and lever arm that can cause an object to rotate; the magnitude is equal to the force times the perpendicular lever arm.
Down
  1. 1. The force exerted by a machine.
  2. 4. This is equal to the displacement of the effort force divided by displacement of the resistance force in an ideal machine.
  3. 5. A device that makes work easier (but does not change the amount of work) by changing the magnitude or the direction of the force exerted to do work.
  4. 8. The force a user exerts on a machine.
  5. 11. The rate at which energy is transformed.