Question

explain why a seesaw is closest in arrangement to a first class lever.

Explanation:

A first - class lever has the fulcrum between the effort and the load. In a seesaw, the pivot (fulcrum) is located between the two people (or objects) sitting on either end. The people on the seesaw apply the effort (by pushing down or using their weight) and their weight (or the force they apply) acts as the load. The arrangement of the fulcrum being in the middle, between the two forces (effort and load) is the defining characteristic of a first - class lever, and this matches the seesaw's structure.

Answer:

A seesaw is closest to a first - class lever because in a first - class lever, the fulcrum is between the effort and the load. In a seesaw, the pivot (fulcrum) is between the two sides where the forces (from people/objects) act. The forces on either side of the pivot act as effort and load, matching the first - class lever's arrangement (fulcrum between effort and load).