Praktikum Fisika 1 Getaran pada Pegas (Modul 7)

Summary

In this educational video, the presenter guides viewers through a spring vibration experiment, demonstrating the process of measuring oscillation periods using different spring constants and weights. The setup includes three springs with varying spring constants (10 N/m, 25 N/m, and 4.5 N/m) and pendulums with adjustable weights. Viewers learn how to assemble the apparatus, perform oscillations, and record data using a ruler and stopwatch. The video emphasizes the importance of calculating periods and understanding the relationship between spring constant, displacement, and mass, with a focus on how these factors influence oscillation behavior.

Takeaways

• 😀 The experiment demonstrates the vibration of a spring using different spring constants and varying weights.
• 😀 The equipment used includes a spring, a pendulum, various weights, a ruler, a stopwatch, and a stative base.
• 😀 The spring constants used in the experiment are 10 N/m, 25 N/m, and 4.5 N/m.
• 😀 Weights are measured as 100 grams, 200 grams, and 300 grams, with the option to add external weights to the pendulum.
• 😀 The first experiment involves keeping the spring constant and the displacement distance constant, while varying the weight.
• 😀 In the second experiment, the spring constant remains the same, but the displacement distance changes, with 1 cm, 2 cm, and 3 cm variations.
• 😀 The third experiment focuses on changing the spring constant while keeping the displacement distance and weight constant.
• 😀 The time for 20 oscillations is measured using a stopwatch, and the period is calculated by dividing the time by 20.
• 😀 Data is recorded in tables, with calculations for periods and spring constants using the known formula for oscillations.
• 😀 The period for each trial is calculated and used to analyze the relationship between displacement, weight, and spring constant.

Q & A

What is the purpose of the experiment described in the script?

The purpose of the experiment is to study the oscillations of a spring system, specifically to observe how factors like the spring constant, displacement, and added weights affect the period of oscillation.

What tools and materials are used in the experiment?

The tools and materials required for the experiment include a spring system kit, a ruler, a stopwatch, weights (100 grams and additional 100-gram external weights), and a pendulum.

How is the spring constant determined in the experiment?

The spring constant is determined by using springs with different constants: 10 N/m, 25 N/m, and 4.5 N/m. The experiment tests these different springs while keeping other variables constant.

What is the first step in setting up the apparatus for the experiment?

The first step is to assemble the apparatus, which includes the base, stative rod, support head, peg, and springs, following the instructions provided in the kit.

How is the displacement measured during the experiment?

The displacement is measured using a ruler to measure the distance the pendulum is pulled away from its equilibrium position. The displacement is set to a specific value, such as 2 cm, 1 cm, or 3 cm, depending on the part of the experiment.

What role does the stopwatch play in the experiment?

The stopwatch is used to measure the time it takes for the pendulum to complete a specified number of oscillations (20 oscillations). This allows the calculation of the period of oscillation.

How is the period of oscillation calculated in the experiment?

The period is calculated by dividing the total time recorded by the stopwatch (for 20 oscillations) by the number of oscillations. For example, if the time is 8.85 seconds for 20 oscillations, the period is 8.85 / 20 = 0.44 seconds.

What changes between the different tables (Table 1, Table 2, Table 3) in the experiment?

The changes between the tables are in the spring constant, displacement, and weight. In Table 1, the weight remains constant at 100 grams, while in Table 2 and Table 3, the weight is increased to 200 grams and 300 grams respectively, and the displacement also changes.

Why is it important to change the displacement and weight in the experiment?

Changing the displacement and weight allows for the investigation of how these factors influence the period of oscillation. The experiment tests the relationship between spring constant, displacement, and weight on oscillatory motion.

How are the results processed and interpreted from the experiment?

The results are processed by calculating the period for each trial using the formula for the period of oscillation. The data from the different conditions (spring constants, displacements, and weights) are compared to analyze trends and relationships in the oscillation behavior.