Force and extension experiment coursework

Every physics experiment has a purpose, often phrased as a question that the experiment hopes to answer. Stretched rubber exhibits elastic hysteresis. A pointer was used to help read the scale on the ruler.

Investigating simple steel springs

A helical spring was suspended from a screw jutting out of the clamp stand equipment and pointer was suspended below it. So, if you have a set of graphs that show the relationship between force and stretch for typical springs, you are pretty-much "golden".

Eyes may be at the same level as clamp and the Force and extension experiment coursework. Leave room for the results of calculations in your data table, but be sure that it is clear which quantities were measured and which quantities were calculated, as well as how they were calculated.

Since he was worried that others, maybe even Newton, would steal the credit for this he wrote in code at first, and created an anagram: The title of the graph indicated what the experiment involved - it did not just say what was plotted angainst what - that could be seen from the labelling of the axes!

The mass hanger was hooked under the pointer. We can put this in an equation. How do you get these graphs? These points indicated a trend of proportionality so a smooth straight line was drawn. There is benefit in doing both, since it will invite discussion and thought on the nature and use of graphs.

It did not matter wherther it went through all of the points. We can work out the weight exerted by the masses in our results by using the equation: If the springs are supplied close-coiled it is better to have the coils separated before issuing them to the students.

Also, steel springs store more energy than copper springs and can fly off their supports. Generally, we want to know "What is the mathematical relationship between quantity A and quantity B? Hang a spring from it and secure it so that it does not fly off.

The extension of the spring is the output or dependent variable and you should plot it on the vertical axis.

You will never collect too much data, but there will definitely be times when you wish you had more. The weight of each mass added was then calculated and recorded in a separate column. It is important to record all of the readings taken and to show clearly any calculations we do from those readings.

The number of masses hanging from the spring is 0 and the extension of the spring is 0 cm. The experimenter had to be sure the spring system was stationary before a reading was taken.

This experiment was safety-checked in January Point out that engineers must understand the behaviour of springs.

Be sure that you keep your original data. So, how do you "come up" with such an answer? Record the new metre rule reading, the number of masses 1 and the extension of the spring. If this is not carefully attended to and there are generally many quantities that could affect the results of an experiment the experimental results will be worthless.

Recording Results The results were recorded in a table. This relationship is common in nature. Students might set the clamped ruler at 0 cm when no masses are added and so read the extension directly.

Much of physics is devoted to seeking such simplicity. Hanging about g gently on the tightly coiled springs will do this.

Force and Motion

Often, we have a theoretical prediction about a relationship that we want to check, as in "Is the acceleration of an object directly proportional to the net force on it?"Hooke's Law" is about stretching springs and wires.

When we apply a force to a spring, it stretches. If we apply double the force, it stretches twice as much, so long as we don't over-do it. So far, this is pretty obvious. Jul 17,  · Best Answer: Hooke's Law: The force applied to a spring to stretch it a certain distance is proportional to that distance.

F = kx k - constant x - stretched distance This force represents the force applied. Often, equations are written with respect to the system instead of the mint-body.com: Resolved. Hooke's Law states that the extension of a spring is directly proportional to the applied load (providing the elastic limit has not been exceeded) At A level we express the idea in an equation: We can put this in an equation.

When K-2 students study Force with Science4Us, they begin to think of force as a push or a pull. Students see examples of force on a playground through live videos and experiment with force through hands-on lessons at school. Conclusion: In this experiment, the stretch of a spring changes as the force applied on the spring changes.

As the stretch increases, the force increases, and it is a constant increase. During the conduction of this lab, several new phrases that were defined came up: extension, Hooke’s law, the spring constant, the percent difference, and the E el %(2).

Feb 10,  · Find the spring constant by timing simple harmonic motion. I have done a Hooke's law experiment already and found out about initial tension.

What I learned was: force ≠ spring constant x displacement force = initial tension + (spring constant x displacement) So using F=kx would not give an.

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Force and extension experiment coursework
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