Final answer:
The point where you apply force on a lever is called the effort. This force, applied perpendicularly and at a distance from the fulcrum, determines the lever's effectiveness by influencing the lever's torque. The correct answer is b.)effort.
Step-by-step explanation:
In the context of a lever, the point where you apply force is known as the effort. A lever is one of the simplest machines, which consists of a rigid bar pivoted at a fixed place called the fulcrum. When using a lever, the force should be applied perpendicularly to the lever arm as far as possible from the pivot point.
Effectiveness of a lever is based on the principle of torques and the distances from the fulcrum. The longer the lever arm on the side where the force is applied, the less effort is needed to lift an object.
More precisely, the mass of the object, the length of the lever on both sides of the fulcrum, and the force applied determine the outcomes when using a lever.
The point where you apply force in a lever is called the effort. It is the location where you exert the force to move the lever and overcome resistance. The effort distance refers to the distance between the effort force and the fulcrum of the lever.