In the figure, the lever arm, l, is distance r from the hinge to the point at which you exert your force. The torque is the product of the magnitude of the perpendicular force multiplied by the lever arm.
Children normally need a certain number of calories each day (energy allowance) that their bodies use as energy for normal daily activities (walking, breathing, etc.). This ranges for boys from 2000 calories for a 7-10 year old, 2500 calories for an 11-14 year old, and 3000 calories for a 15-18 year old. For girls the ranges are from 2000 calories for a 7-10 year old, to 2200 calories for an 11-18 year old. These are only estimates and some children need more (fast metabolism) or less (slow metabolism) of an energy allowance for daily activities.
How much sugar do your kids eat each day? The American Heart Association recommends that kids eat less than 6.5 teaspoons or 100 calories from sugar each day. But according to a poll in Family Circle, the average teen takes in about 34 teaspoons of sugar, or 500 calories worth, each day.ethink drinks (and snacks): Sugar-sweetened drinks are the main culprits behind overdoses in sugar. A single 12-ounce can of soda may have as much as 39 grams of sugar. That's more than 150 calories from sugar, way more than a kid should have in a day.