• 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

# An investigation into the relationship between the force applied on a cantilever and its deflection.

Extracts from this document...

Introduction

An investigation into the relationship between the force applied on a cantilever and its deflection

I aim to investigate the relationship between the force applied on a cantilever and its deflection.

Research – A cantilever is a projecting structure such as a beam, which is supported at one end and carries a load at the other end or along its length.

To measure the deflection, I will place a ruler, vertically at the end of the cantilever with the force applied. I will record the amount of deflection with no force (only gravity) and calculate the difference.

Before I did the experiment, I carried out some preliminary work so that I could find out the best length of the cantilever, material of the cantilever, and maximum and minimum force applied to the cantilever.

I learnt from my preliminary experiment what my ranges should be and how many results I would need to prove my prediction. Also I learned how to set up my apparatus and how big or small my overhang should be.

I chose to use a meter ruler for my cantilever, as it is a widely available object to use and it is already marked in measurements.

I will use a wooden meter ruler, as it can take more force that a plastic one, I know this from my preliminary work.

I will use a maximum load of 7 Newtons (700 grams)

Middle

0.00

168

0

1.00

203

035.00

2.00

233

065.00

3.00

267

099.00

4.00

282

114.00

5.00

316

148.00

6.00

331

163.00

7.00

365

197.00

Set 2

 Force applied (N) Deflection (mm) Difference (mm) 0.00 172 0 1.00 198 026.00 2.00 224 052.00 3.00 251 079.00 4.00 276 104.00 5.00 302 130.00 6.00 326 154.00 7.00 350 178.00

Set 3

 Force applied (N)

Conclusion

Evaluation –

My procedure was good enough to make my measurements reliable as I got another person to read them as well as me.

I can tell that my results are reliable as my line of best fit is a straight one which passes through the point 0, 0 and all of the points lie close to the line of best fit. I can tell that they are also reliable as they graph agrees with Hook’s law.

I did not have any anomalous results in my investigation as all of my results fit in with my pattern.

From the above, I believe that my results were accurate enough, although if I was to do the investigation again I would take more results at more regular intervals. E.g. Every 0.5 N so that my results were even more accurate because I would be taking more results.

My graph shows me what I needed to see, but if I had more results, I would be able to see a better line. This would allow me to get a better conclusion of my results. From my graph I can see that when the force is doubled so is the deflection.

Overall, I believe that my investigation was conclusive enough for what I wanted to know but could have been more accurate if I wanted it to be. My results show that the deflection is directly related to the Force, and that when the force is doubled the deflection is doubled this agrees with Hook’s law.

Jack Cummins 10LB

This student written piece of work is one of many that can be found in our GCSE Forces and Motion 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 GCSE Forces and Motion essays

1. ## Investigating a Cantilever.

4 star(s)

mass' of 100-500g at 100g intervals G-Cramp Cantilever Pin Mirror Ruler We are going to fix the cantilever to the lab bench at a length of 500mm using the cramp. The pin will be fixed to the end of the cantilever so as to give accuracy in the taking of the results.

2. ## In this experiment I aim to find out how the force and mass affect ...

The light gate was securely fastened to the clamp stand and the picket fence was attached to the top of the trolley so it wouldn�t fly off and hit somebody while it speeded down the runway. The runway also had rubber grips at the bottom end of the runway, this

1. ## Practical Investigation Into Viscosity

Thus using an object of various sizes it would be possible to investigate the proportionately of size on the descent of the object. Viscosity I feel it is important to investigate the affects of how a more viscous liquid would impede the progress of an object descending through a liquid.

2. ## Squash Ball and Temperature Investigation

rise in air pressure and pushes the ball in the direction opposite its motion. While there are various other changes in air pressure around the ball's surface, this rising pressure in front of the ball remains largely unbalanced and it slows the ball down.

1. ## Acceleration, Force and Mass

marks had not been made on the ticker-timer paper and so proper analysis could not be undertaken ( a fair test would not be maintained). Fair Test: A fair test must be ensured at all times, in any experiment, to keep the results as accurate as possible so that appropriate conclusions can be drawn.

2. ## Friction Investigation

together will require more force to undo, and vice-versa for a smoother surface. There are many other types of friction, rolling, static and sliding are examples of them. Prediction: I predict that as the weight of the trainer increases, so will the amount of friction that occurs when it is dragged along a surface at a constant speed.

1. ## The Helicopter Investigation

* Stopwatch * 2x Metre Ruler Diagram Method Assembly of Helicopter Initially I would have to explore what materials were needed for my investigation and set them up and use them accordingly if I want to achieve precise results. Now I will explain how to conduct my experiment: 1.

2. ## Controlled Assesment Experiment - The extension of a rubber band depends on the force ...

force is removed So long as we don?t exceed the elastic limit The elastic limit is where the graph departs from a straight line. If we go past it, the spring won't go back to its original length. When we remove the force, we're left with a permanent extension.

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