14 Questions
What is the purpose of Experiment One?
To investigate how the extension of a spring is related to the applied force
What is the independent variable in Experiment One?
The stretching force F
What is the dependent variable in Experiment One?
The extension of the spring e
What are the control variables in Experiment One?
The material of the spring and the cross-section of the spring
What is the formula to calculate the stretching force F?
F = mg
What does Hooke's law state?
The extension of a spring is directly proportional to the force applied, provided that the limit of proportionality is not exceeded
Why is it important to control the material of the spring in Experiment One?
To make it a fair test, by keeping one variable constant
What is the limit of proportionality in Hooke's law?
The point where the spring breaks
What is the unit of measurement for the spring constant 'k' in Hooke's Law?
N/m
What is the purpose of attaching the mass hanger to the lower end of the spring?
To apply a force to the spring
What is the formula to calculate the stretching force?
F = mg
What is the initial length of the spring measured from?
The meter rule
What is the unit of measurement for the extension 'ΔL'?
m
What is the purpose of calculating the extension?
To find the spring constant
Study Notes
Purpose of the Experiment
- To investigate the extension of a spring and its relationship with the applied force
- To verify that the extension of a spring is directly proportional to the force applied, within the limit of proportionality
Variables in the Experiment
- Independent Variable: stretching force F (weight attached to the spring, calculated using F = mg)
- Dependent Variable: extension of the spring e
- Control Variables: material of the spring, cross-sectional area of the spring (kept same to ensure a fair test)
Hooke's Law
- The extension of a spring is directly proportional to the force applied, provided that the limit of proportionality is not exceeded
- Equation: F = -k ΔL, where F is the force in newtons (N), k is the spring constant in newtons per meter (N/m), ΔL is the extension in meters (m), L is the extension of the spring, and L˳ is the length of the spring in relaxed state
Apparatus
- Steel spring
- Masses (20, 30, 40…gm)
- Weights holder
- Meter rule
Method
- Set up apparatus as shown in the diagram
- Attach mass hanger s-hook and pointer to the lower end of the spring
- Read the pointer value from the meter rule to record the initial length of the spring
- Add masses to the hanger and record the mass in kg
- Read the new position of the pointer on the meter rule to record the stretched length of the spring
- Calculate the stretching force (W = mg) and extension (stretched length – original length)
- Repeat the procedure by adding 20g masses and recording the new stretched length and extension
This quiz is about an experiment to investigate the relationship between the extension of a spring and the applied force, and to recall Hooke's Law. The experiment aims to show that the extension of a spring is directly proportional to the force applied.
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