Mass is a measure of the amount of matter in an object. It is typically measured in units of grams (g) or kilograms (kg).
To find the mass of a solid object, you can use a balance or scale. Place the object on the balance and record the reading. This will give you the mass of the object in grams or kilograms.
The center of mass of a solid object is the point at which the object's mass is evenly distributed in all directions. It is also known as the center of gravity.
To find the center of mass of a solid object, you can use a plumb line or a balance. Hang the object from a point and draw a line perpendicular to the ground. Repeat this process from a different point. The center of mass will be where the two lines intersect.
Finding the center of mass of a solid object is important because it helps us understand the object's stability, balance, and how it will behave when subjected to external forces. It is also crucial for designing structures and machines that are stable and safe to use.