Deforming force:

We know that the length of a rubber band increases on stretching it. Similarly, the pointer of a spring balance is lowered when a body is suspended from it. It is because the length of the spring inside the balance increases depending upon the weight of the suspended body.

The applied force that changes the shape, length, or volume of a substance is called deforming force. In most cases, the body returns to its original size and shape as soon as the deforming force is removed.