Work & Simple Machines
Across
- 2. States that when work is done on a system, a change in energy occurs.
- 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.
- 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.
- 7. The ratio of resistance force to effort force.
- 9. The ratio of output work to input work.
- 10. Unit of power; 1 J of energy transferred in 1 second.
- 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. The force exerted by a machine.
- 4. This is equal to the displacement of the effort force divided by displacement of the resistance force in an ideal machine.
- 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.
- 8. The force a user exerts on a machine.
- 11. The rate at which energy is transformed.