For calculation of weight measure the size of force operating on a body then calculate its acceleration then divide force size into acceleration and receive value of weight. In the presence of a standard of weight force to interact these bodies and determine weight by the obtained data, that is compare reference and unknown weight by means of lever scales.
It is required to you
- speedometer, two identical carts, set of weights, lever scales.
Instruction
1. Dynamometer measurement of weight telas measure by the help of a spring dynamometer force size operating on a body. Divide the received size (in Newtons) into the size of acceleration of gravity (9.81). The value of weight in kilograms will be result. When the body begins the movement from a condition of rest, by means of a dynamometer measure force operating on this body then measure length of the way passed by a body and size of final speed. Increase the size of force by the size of the passable distance in meters, then increase by 2, and divide this result into the size of final speed in a square. As a result receive body weight in kilograms.
2. Etalonastyanuty a thread to a horseshoe form an elastic metal strip place comparison of body weight with weight between two carts, identical on weight. Place a body which size of weight needs to be measured on one of these carts. Put carts on a horizontal and plain surface. Then cut off thread - the strip which is holding apart carts will be straightened and will push them in different directions. Measure the distance passed by carts. After that increase the mass of the empty cart by the distance passed by the cart with the measured body. Divide the number received as a result of multiplication into the distance passed by the empty cart. For obtaining mass of cargo take away the mass of the empty cart from this result.
3. Measurement of body weight to a vzveshivaniyemuravnovesta lever scales by means of adjusting nuts. Then put the measured body on a scale. Then again counterbalance scales, adding reference weights on an opposite scale. After equilibration count the total weight of the weights lying on a scale. Body weight in kilograms will be result.