What is the symbol for the basic unit of mass?

The basic unit of mass in the International System of Units (SI) is the kilogram, which is represented by the symbol "kg." The kilogram is defined based on the mass of a physical prototype kept at the International Bureau of Weights and Measures. It is the only SI unit with a prefix (kilo-) as part of its name.

This unit is fundamental in various fields including physics and engineering, where calculations often revolve around mass. The mass of an object is crucial as it influences the weight, inertia, and energy of the system in which the object is involved. Understanding and using the correct unit for mass is essential for carrying out scientific experiments, as well as for industrial applications involving measurements and conversions.