Difference Between Compression and Tension

Tension and compression are two concepts discussed in physics. Tension is a force while compression is a phenomenon. Both these concepts play important parts in fields such as mechanical systems, automobile engineering, heat engines, material science, pendulums and various other fields. It is vital to have a proper understanding in tension and compression in order to excel in such fields. In this article, we are going to discuss what compression and tension are, their definitions, applications of compression and tension, the similarities between compression and tension and finally, the difference between compression and tension.

Tension

Tension is defined as the pulling force exerted by a cable, string, chain or a similar object. There are two types of strings. A weightless string is a hypothetical string with no weight. A real string is a string with a finite amount of weight. These two definitions are important in describing the tension. When an object is pulled by a string, the tension occurs at every point of the string. This is due to the intermolecular attractions. The bonds between the molecules act as small springs, keeping the two molecules from separating. When a force tries to stretch the string, these bonds resist the deformation. This causes a series of balanced force throughout the string. Only the two ends of the string have unbalanced forces. The unbalanced force at the end, at which the initial force is acted, is balanced by the initial force. The unbalanced force at the object’s end acts on the object. In this sense, tension can be considered as a force propagation method. If the string has a weight the string will not be horizontal, thereby the weight of the string must be added to the calculation.