Weight — force of impact of a body on the support (or other type of fastening in case of the suspended bodies) interfering falling, arising in the field of gravity. The weight unit of measure in SI — newton, is sometimes used SGS unit — dyne.
It is required to you
- Scales, calculator.
Instruction
1. In modern physics the body weight and body weight - different concepts. Weight — force with which the body affects a horizontal support or a vertical suspension. Weight is not a power factor. For example, in the conditions of zero gravity at all bodies the weight is equal to zero, and weight at each body the. Body weight is measured in grams, kilograms and so on, and body weight depending on the system of measurement in newtons or in dynes.
2. Let's take scales and a body which weight we want to calculate. Let's put a body on scales and we will record result. Let's assume that a body is apple and its weight is equal to 0.5 kg. We will look for the body weight, as well as its weight in the SI system.
3. As the body, in our case apple, is based upon a surface of scales, but does not fall in with acceleration, the weight of apple can be found on a formula: P = mg. Where P is actually the body weight, m its weight in kilograms, and g is the acceleration of gravity which is almost constant in any point of Earth and equally about 9.81 м/c^2. By means of the calculator we will calculate apple weight on formula P = 0.5*9.81 = 4.905 N. Thus we receive that the mass of apple is equal to 0.5 kg, and its weight of 4.9 newtons.