why do people have weight of 100 pounds

Please clarify.

because they have mass of 45.45 kg, and gravity pulls them with the force of 100 lbs.

The weight of an individual can vary for multiple reasons. The specific weight of 100 pounds mentioned in your question can be considered as an example or a specific scenario. However, it's important to note that weight is influenced by several factors, including genetics, body composition, diet, and physical activity.

To determine why people may have a weight of 100 pounds, you should consider the following:

1. Genetics: Each individual has a unique genetic makeup that contributes to their body shape and size, including weight. Some people may naturally have a lower body weight due to their genetic predisposition.

2. Body Composition: Body composition refers to the proportion of different types of tissues in the body, such as muscle, fat, and bone. Individuals with a lower percentage of body fat and higher muscle mass tend to have a higher weight despite not necessarily looking overweight.

3. Diet: The type and amount of food people consume on a daily basis can significantly impact their weight. If individuals consume a balanced diet with an appropriate caloric intake, they are more likely to maintain a healthy weight.

4. Physical Activity: Regular physical activity and exercise can influence weight by burning calories, building muscle, and improving overall metabolism. Lack of physical activity can lead to weight gain or difficulty in losing weight.

It is important to remember that weight is not the sole indicator of a person's health or well-being. Factors such as body composition, muscle mass, and overall fitness level play an important role in determining an individual's physical condition. If you have concerns about your own weight or body composition, consult a healthcare professional or a registered dietitian who can provide personalized advice based on your specific circumstances.