Mechanical Advantage Practice Part 2: AMA and Efficiency

The video tutorial covers the concept of actual mechanical advantage (AMA) and its calculation using force rather than distance. It explains the problem-solving process for AMA, including reading the problem, listing known values, writing and rearranging equations, and solving. Two example problems are demonstrated: calculating the effort force needed to lift a load and determining the load of a simple machine. The video also discusses calculating machine efficiency by comparing AMA and ideal mechanical advantage (IMA), emphasizing common mistakes and the impossibility of 100% efficiency due to factors like friction and heat loss.

What is the significance of the efficiency equation in relation to AMA and IMA?

How do you convert a fraction into a percentage when calculating efficiency?

Describe a common mistake people make when calculating the efficiency of a machine.

What factors can lead to a machine being less than 100% efficient?