Elasticity And Harmonic Movement

Purpose:
First, to know the increasing of spring when expenses put in it. Second to count the coefficient of spring force. Third, to find out the relation between force and delta length.

Properties:
1.Ruler
2.Expenses (10gr, 20gr, 30gr)
3.Little pole with horizontal stick
4.Spring
5.Stationary


Procedure:
1)Prepare the properties we will use.
2)Then prepare a coin for being an object. We must use different coin in different mass each person.
3)Measure the change of spring length by decrease the last length (after the coin on it) and the first length.
4)Make some vibrations at that thing. But the vibration must be constant each person. For example 10 vibrations (like our experiment).
5)Use stopwatch for measuring the time when the spring is fluctuate in 10 vibrations.
6)Measure the frequency by using the formula.
7)Also measure the spring constant by using the formula.
8)Make the conclusion.

Table:



Formula:


Experiment:




Conclusion :
•The bigger mass of coin that used it will be bigger the time, Xt and ∆x that needs, but the frequence and the coeficient will be smaller.
•Frequency is influenced by the mass of coin.
•So it can be :
•