The magnitude of the moment of a force acting about a point or axis is directly proportinoal to the distance of the force from the point or axis. It is defined as the product of the force (F) and the moment arm (d).
The student athlete child between the ages of 9 and 13 should consume between 2,000 and 2,600 calories, and if they are between 14 and 18 they should consume between 2,800 and 3,200 calories. It is also important that the types of calories the athlete consumes are balanced between carbohydrates, proteins, and fats.
To gain one pound per week increase your required calories by 500 per day (500 calories X 7 days per week = 3500 calories) The American College of Sports Medicine recommends a minimum of 1200 calories per day for females and 1800 calories per day for males.