Shearing Resistance Explained

The question asks about the name of the resisting force that acts parallel to a plane. In physics and engineering, forces are often classified based on their direction relative to a surface or plane.

A force acting parallel to a surface or plane is typically associated with shear stress or shear force. When a material or body is subjected to forces that tend to cause one part to slide over another part along a plane, the internal resistance developed within the material or at the interface is referred to as shearing resistance.

Let's look at the given options:

• Pulling force: This is a force that tends to elongate or pull a body. It can act in various directions, not necessarily parallel to a specific plane in this general definition.
• Shearing resistance: This is the resistance offered by a material or interface against forces that cause shearing (sliding parallel to a plane). This aligns directly with the definition required by the question.
• Normal force: This is a force that acts perpendicular to a surface or plane. It is the opposite of a force acting parallel to the plane.
• Pushing force: This is a general term for a force that tends to compress or push a body. Like pulling force, it can act in various directions.

Therefore, the resisting force parallel to the plane is known as shearing resistance.