Hooke's Law Experiment

What is the purpose of Experiment One?

What is the independent variable in Experiment One?

What is the dependent variable in Experiment One?

What are the control variables in Experiment One?

What is the formula to calculate the stretching force F?

What does Hooke's law state?

Why is it important to control the material of the spring in Experiment One?

What is the limit of proportionality in Hooke's law?

What is the unit of measurement for the spring constant 'k' in Hooke's Law?

What is the purpose of attaching the mass hanger to the lower end of the spring?

What is the formula to calculate the stretching force?

What is the initial length of the spring measured from?

What is the unit of measurement for the extension 'ΔL'?

What is the purpose of calculating the extension?

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.