0. Introduction
Elasticity is usually measured using Hooke's Law, F=kx, where F represents the force pulling the object, k represents the proportionality constant and x represents the extension in which the object increased its length by. (Giancoli Physics, P237)
1. Planning (A): aims of the experiment
Research question:
Using Hooke's Law, what is the biggest weight possible to be hanged on a spring and rubber bands, while continuously adding weights?
Hypothesis:
I predict that the rubber band nor the spring will be able to hold more than 2 kg of weight.
Variables:
Independent Dependent Control Variables
Weight ( force ) Spring / rubber band Spin of the weight
Volume of the weight
2. Planning (B): methods and tools
List of apparatus:
1 scale
2 rubber bands
1 spring
20 weights weighting 100g each
1 ruler
1 pencil
A piece of paper with a table
1 clamp
1 stand
Diagram of set-up:
Method:
Rubber band (Elastic). Deutsch: Gummibänder
Oldest star in solar neighbourhood
Hubble Finds Birth Certificate of Oldest Known Sta...1. The apparatus were gathered and set as drawn above
2. The actual value of the weight was measured using a scale
3. We carefully added on the weights
4. We measured the length using a ruler
5. Data was recorded onto a table
6. Repeat 2-5, and add extra weight every time.
3. Data Collection
Stretching a spring
Load Mass / kg Uncertainty in Load Mass / kg Length / cm Uncertainty in Length / cm
0 0 0 0
0,09 0,05 0,036 0,005
0,2 0,05 0,041 0,005
0,29 0,05 0,089 0,005
0,39 0,05 0,174 0,005
0,49 0,05 0,229 0,005
0,59 0,05 0,269 0,005
0,69 0,05 0,314 0,005
0,79 0,05 0,354 0,005
0,88 0,05 0,414 0,005
0,96 0,05 0,464 0,005
1,08 0,05 0,514 0,005
1,18 0,05 0,574 0,005
Stretching two rubber bands
Load Mass / kg Uncertainty in Load Mass / kg Length / cm Uncertainty in Length /...