• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6
7. 7
7
8. 8
8

Experiment to measure deflection when a force is applied to a cantilever.

Extracts from this document...

Introduction

Sc1 Investigation - bending of a Cantilever. Experiment to measure deflection when a force is applied to a cantilever. Introductory Diagram Aim To find out whether varying the load has any affect on the deflection (?d) of the ruler. Theory Elasticity is the property, which allows a material to regain its shape after being distorted. Some materials like, rubber bands, are much more elastic than others. The elastic limit of a material is the maximum amount by which it can be stretched and still regain its original shape after the distorting forces are removed. If a material is stretched beyond its elastic limit its shape is permanently changed. ' The deformation of a material is proportional to the force is applied to it, provided the elastic limit is not exceeded'. This is known as Hooke's Law, named after its discoverer, Robert Hooke, a 17th century scientist. Young's Modulus When stress is applied to a material, strain is produced in the material. ...read more.

Middle

4. Plastic behaviour - beyond the elastic limit, the wire loses its elasticity. Its behaviour is described as plastic because it does not regain its initial shape when the forces applied are removed. 5. The maximum stress, the point where the spring has its greatest strength it is sometimes called the ultimate tensile strength (UTS) of the material. 6. B, stands for the breaking point. Prediction I predict that increasing (F) force or load will increase the deflection (?d). I also predict that Hooke's Law is correct and that; ' The deformation of a material is proportional to the force is applied to it, provided the elastic limit is not exceeded'. Variables Independent variable - Weight Dependent variable- Extension Control variable - Ruler position, same ruler. Safety 1. Be careful, the ruler might break. Fair test 1. Use the same: - G Clamp Ruler Table Only change one variable in each investigation. Equipment G-Clamp Ruler (x2) ...read more.

Conclusion

The load is proportional to the extension, as found as evidence to Hooke's Law. ' The deformation of a material is proportional to the force is applied to it, provided the elastic limit is not exceeded'. However, my results do not show that there is a bend limit. This is probably because I did not put enough load on the end of the ruler to find this out. Evaluation I thought the investigation went well. My prediction turned out to be correct. I did have some anomalous results in my results but they were not totally wrong, they just were not as accurate as I would have liked them to be. If I had to repeat the experiment I would like to use a more accurate ruler that had a scale down to one tenth of a millimetre, rather than a one-metre ruler with a scale down to millimetres. Unfortunately, I could not use larger masses because the ruler might fracture and it could have disastrous results. I believe that it really was a fair test. I used the most accurate method possible to measure the deflection of the ruler with the resources available. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology section.

Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Related AS and A Level Waves & Cosmology essays

1. I am doing an investigation in to how much a metre rule bends when ...

If I did have an anomaly, I would leave it out of my final conclusion as it would not fit in with the rest of my points and thus would not help to prove my hypothesis correct. I repeated the experiment three times and I have found that I got very similar results each time.

2. In this experiment I aim to find a value for the Young's Modulus of ...

depth because this will be such a small reading and 0.005mm will make a lot of difference when calculating the area. To make the reading larger I decided to fold the tape over twenty time, which will make the depth greater, find the result and then divide the answer by

1. Making sense of data - finding a value for the young modulus of a ...

with this ruler so that the deflection could be measured but both of these rulers had a bend initially because of its own weight but these deflections were different hence this slightly affected my accuracy of my final result. The variable error was that, the weights were not hung from a fixed position this also could have affected results.

2. What factors affect the period of a Baby Bouncer?

1.440 19.2 GENERAL OBSERVATIONS: * The mass extended the spring according to my prediction * There was sometimes a pendulum-like motion of the mass. This was particularly true for the smaller masses which have a smaller extension. However, this posed no problem for data collection as results were seen as anomalous and the test was repeated.

1. Stretching Springs/Hookes Law.

all the equipment and all the safety equipment-: 2 springs Clamp stand Clamp Weights Ruler Goggles -I will then set up all the equipment -I will then put on the spring carefully so that I don't damage the spring to make it a fair test.

2. Investigation to show how Elastic Bands Behave Under Load.

are a lot shorter and are more intertwined so they will not stretch as far. Also from the graphs I have drawn, the gradient again is a lot steeper for the thinner band than the thicker band. This is because in the thicker band the molecules are more intertwined and

1. An Investigation into Hooke's Law - The aim of this experiment is to find ...

Apparatus: These are the equipment pieces id need to use: * 30cm Ruler * Spring with hooks at each end. * Retort stand and clamp * Varied Selection of weights * Weight holder with hook at the end. Method: * Collect and set up apparatus as shown in diagram.

2. Waves and Cosmology - AQA GCE Physics Revision Notes

* When particle interact / decay, the event must follow the conservation rules. Energy and mass are equivalent, so energy could be converted into mass and vice verse. * In particle physics, the total charge, baryon and lepton numbers must also be the same after the event as it is before.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to