The mechanical advantage is equal to 10/4 or 2 1/2. As with the inclined plane, the mechanical advantage gained by using a wedge requires a corresponding increase in distance. T Fulcrum is between EF (effort) and RF (load)Effort moves farther than Resistance.
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Preparing to Use a Pulse Oximeter. 1  1. Understand the relationship between oxygen and the blood. Oxygen is breathed into the lungs. 2  2. Understand the reasons for the procedure. Pulse oximetry is used to assess oxygen saturation in the blood for a variety of reasons. 3  3. Understand how the pulse oximeter works.