Which of the following is not a component of a lever?
a. effort
b. tension
c. fulcrum
d. load

Option (b) is correct. Tension is not a component of a lever.

Further Explanation:

The lever is considered to the simplest form of a machine. A lever is used to gain some work by applying an effort at one end of a bar over a load.  

The levers are basically divided into three different classes based on the location of their primary elements. A lever has three primary elements namely:

• Fulcrum.

• Load.

• Effort.

The fulcrum of a lever is the point on which it is supported or it is the pivot of the lever. The effort is the amount of force or work done on the lever in order to obtain some work and the load is the body on which the work is to be obtained.

Therefore, the levers are classified into three different classes based on the position of its three main components.

Class 1 lever:

The class 1 lever is the lever in which the fulcrum is situated between the load and effort. It is the simplest and the most common configuration of the lever.

For example:- A pair of scissors, catapult, pliers etc.

Class 2 lever:

The class 2 lever is the lever in which the load is placed between the fulcrum and the effort. In this type of lever, the length of the effort arm is always larger than the load arm.

For example:- Nut cracker, wheelbarrow etc.

Class 3 lever:

The class 3 lever is the lever in which the effort is placed between the fulcrum and the load. In this type of lever, the length of the effort arm is always smaller than the load arm.

For example:- Staplers, tweezers, hockey stick etc.

The tension is the force developed in a string when there is a force acting on a body in the opposite direction trying to pull or stretch the wire.Therefore, the tension is not a part of the components of the lever.

Thus, Option (b) is correct. Tension is not a component of the lever.

Learn More:

1.  Motion of a body under friction

2.  A ball falling under the acceleration due to gravity

3. Net force on a body

Answer Details:

Grade: High School

Subject: Physics

Chapter: Simple Machines

Keywords:

Lever, load, effort, fulcrum, tension, load arm, effort arm, machine, classes, class 1, class 2, class 3, components, force, pivot, work.