To determine the weight of any motionless or moving evenly, including metal, bodies, find its weight and increase by acceleration of gravity. To find the mass of this body, measure it by means of scales. If it cannot be made, define a type of metal of which the body is made and measure its volume, then determine its weight by a formula.
It is required to you
- Scales, the table of density of substance, measured cylinder, caliper, roulette will be necessary for you.
Instruction
1. To determine the weight of metal measure its weight, then increase the received value by 9.81 (acceleration of gravity). Measure the mass of metal on scales in kilograms. If the product is too bulky and it is heavy, calculate its weight. For this purpose define metal of which the body is made and find its density in the special table. Then find the volume of a metal subject. For each form the technique of its definition is various.
2. If the subject represents a parallelepiped, measure its length, height and width, then multiply these values. It will also be the volume of a metal body. In case the body represents a cube, just measure one his edge and build the received value in the third degree.
3. If the body has the cylindrical form, measure diameter and length of this cylinder. For finding of its volume square diameter, increase it by the cylinder length, number 3.14 and divide into 4, V=3.14 ·d²\• l/4.
4. One more popular form given to metal bodies – a pipe. Measure pipe length by a roulette and its external diameter a caliper. Calculate cylinder volume. Then measure internal diameter and calculate cylinder volume. Then subtract smaller from bigger volume. It will also be the volume of a metal part of a pipe.
5. To find the volume of a metal body of irregular shape, ship it in water and measure the volume of the forced-out water by means of a measured cylinder. It will be equal to required. Increase the received volume by metal density, as a result receive the mass of a metal body. If volume was measured in cubic meters, use density in kilograms on cubic meters if in cubic centimeters or milliliters, then in grams on centimeters cubic. Respectively, receive weight either in kilograms, or in grams.