Experimental Results Report

Experimental Results Report

Conservation Law of Energy

ID No : 2010107 Name : Karaboev Temurbek Date : 13.11.2020

1. Measurements and calculations
Distance between two blue lines d = 18 m

Spring constant k = 1500 N/m

The player’s mass m = 75 kg

	Compressed distance,	The Spring potential energy, Us (J)	Elapsed time, t (s)	The player’s speed,	The player’s kinetic energy, K (J)	Relative error (%)
	x (m)			υ (m/s)
1	1,8	2430	2,2	8,181818182	2510,330579	3,305785124
2	2	3000	2	9	3037,5	1,25
3	2,6	5070	1,52	11,84210526	5258,82964	3,724450491
4	2,8	5880	1,42	12,67605634	6025,590161	2,476023141
5	3	6750	1,32	13,63636364	6973,140496	3,305785124
					Average	2,81240878

The player’s mass m = 100 kg Spring constant k = 1500 N/m

	Compressed distance,	The Spring potential energy, Us (J)	Elapsed time, t (s)	The player’s speed,	The player’s kinetic energy, K (J)	Relative error (%)
	x (m)			υ (m/s)
1	1,2	1080	3,94	4,568527919	1043,572367	3,37292896
2	1,8	2430	2,56	7,03125	2471,923828	1,725260417
3	2	3000	2,34	7,692307692	2958,579882	1,380670611
4	2,4	4320	1,92	9,375	4394,53125	1,725260417
5	2,6	5070	1,82	9,89010989	4890,713682	3,536219291
					Average	2,348067939

2. Results and discussion

The purpose of the work: to successfully carry out laboratory work, to strengthen theoretical knowledge in the laboratory process and to know how to apply them in practice.

Order of execution of the work: At the beginning of the lab, a person is forced to squeeze the tangerine with his own mass. It is known to us that when the coil is compressed, the specific potential energy in the coil comes into the body, and when it is compressed to a certain ∆x, it transmits (gives) its energy to the person. Now in this case, the actor will have a certain amount of speed, and with the speed he receives, he will have kinetic energy. When the player starts switching from the specified range, the stopwatch end is pressed and the results are recorded.

In the experiment, we squeeze the tangerine at different distances and repeat the experiment 5 times.

In the next case, we repeat the experiment in this case by changing the mass of the person. Using the obtained and recorded results, we perform computational actions and calculate the errors in the laboratory.

Formulas:

We calculate its potential energy from the distance when the tangent is compressed (1) - formula. We calculate the speed of a person using the specified distance and the time that he left to pass this distance (2) - formula. Then, using the speed of man, we find his kinetic energy. After the (3) formula, we use the 4-th formula to find the error

Energy is sometimes introduced as an independent concept (although related to them) from Newton's laws. But in fact, the idea of energy is directly derived from Newton's second law, and Newton's second law actually guarantees the Central truth about energy, that is, energy is never lost or disappears, but simply changes its shape, that is, it saves energy

This can be illustrated by the example of a falling ball (an example of Galileo's experiments will be in Catherine's) for example, we will look at a little algebra to show how the law of conservation of energy follows from Newton's second law. Keep in mind that the gravity of the falling ball is mg, where m is the mass of the ball and g is the gravitational force. Therefore, Newton's second law takes the form

3. Question
Why relative error becomes bigger when the compressed distance is increased?

The greater the compressed distance, the greater the speed and the more difficult it is for the human eye to correctly detect time