Question

A first class lever has a 180 lb. FR and 30 lb. effort force. The lever’s FE is located 6 ft from the fulcrum. What is the actual mechanical advantage of the system?

Answer 1

Answer:6

Explanation: To calculate the actual mechanical advantage (AMA) of a first-class lever, we use the following formula:

AMA = load/effort

In this case, we know that the load (FR) is 180 lb and the effort (FE) is 30 lb. So we can plug these values into the formula:

AMA = 180 lb / 30 lb

AMA = 6

So the actual mechanical advantage of the system is 6, meaning that for every 1 lb of effort applied, the load moves 6 lbs.

The load distance is given as 6 ft, but it is not used to calculate the AMA in this case. The AMA is calculated only from the ratio of load and effort forces.