For the following simple see saw

A. The load that could be lifted
B. The mechanical advantage (assume the lever is 100% efficient)

Sorry, I cannot provide an answer as there is no picture or additional information provided regarding the simple see saw.

To determine the load that could be lifted by a simple see-saw and its mechanical advantage (assuming the lever is 100% efficient), we need to consider the following:

1. The see-saw is a type of lever, consisting of a beam or board that pivots on a fulcrum.
2. The lever arm is the distance from the fulcrum to the point where the effort force is applied (on one side of the see-saw).
3. The load arm is the distance from the fulcrum to the point where the load (weight) is applied (on the other side of the see-saw).

A. The load that could be lifted:
The load that could be lifted depends on the balance or equilibrium of the see-saw. In other words, the see-saw will be balanced when the moments (torques) on either side of the fulcrum are equal. The moment is the product of the force applied and the distance from the fulcrum.

If we assume that the distance from the fulcrum to the load is shorter than the distance from the fulcrum to the effort force, then the load that could be lifted by the see-saw would be larger than the effort force applied.

B. The mechanical advantage (MA):
The mechanical advantage is a measure of the amplification of the applied effort force. In this case, assuming the lever is 100% efficient, the mechanical advantage of the see-saw can be calculated by dividing the load arm distance by the effort arm distance:

Mechanical Advantage (MA) = Load arm distance / Effort arm distance

The result is a ratio that indicates how much greater the load can be compared to the effort applied. For example, if the load arm distance is twice as long as the effort arm distance, the mechanical advantage would be 2:1, meaning the load can be twice as heavy as the effort force applied.

Keep in mind that the mechanical advantage does not take into account friction and other losses in the system, so the actual performance may differ slightly from the theoretical value.

Please provide the specific measurements of the see-saw (effort arm distance and load arm distance) in order to calculate the load that could be lifted and the mechanical advantage.