Determine the amount of force needed to do work using different simple machines SPI 0707.11.2

Links verified on 5/6/2024

1. Inclined Plane - This Java applet demonstrates a motion on an inclined plane with constant velocity and the corresponding forces.
2. Move Our Principal - learn about the six simple machines then use their knowledge to assist their principal.
3. Pulley - Investigate mechanical advantage of a pulley with this interactive java applet  
4. Pulley System - (raise or lower the load with the mouse) If you click on the mouse button, a spring balance will appear showing the tension in the string.
5. Simple Machines Made Simple - interactive lesson about the six simple machines and how the machines make work easier

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