• 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

# To find out how accurate a stop clock, ticker timer and light gate are, and therefore how precise my work is.

Extracts from this document...

Introduction

## Accuracy and Precision

by Emma Walters

Aim:

To find out how accurate a stop clock, ticker timer and light gate are, and therefore how precise my work is.

Definitions:

Accurate – free from error

Precise – exact; correct and clearly stated

Apparatus:

• ## Trolley

• Runway
• Blocks
• Stop clock
• Ticker timer
• Tick tape
• Power pack
• Meter rule
• Light Gate
• Cardboard
• Balance

Diagram:

Method:

1. Collect and set up apparatus.
2. Weigh trolley, record.
3. Raise runway to 15cm high.
4. Measure 1.00m on runway.
5. Place Trolley at top of runway.
6. Release trolley and start Stop clock.
7. Stop clock when trolley past 1.00m.
8. Repeat 3 times and record results.
9. Attach 1.00m length of ticker tape to back of trolley.
10. Turn ticker timer on and release trolley.
11. Repeat 3 times and record results.
12. Tape piece of card to top of trolley, and reweigh trolley, record.
13. Turn light gate on, make sure 1.00m apart.

Middle

(N)

1.8

1.9

1.9

1.9

0.783

1.00

0.53

1.1

0.28

0.227

Ticker timer

1.7

2.0

2.2

2.0

0.783

1.00

0.51

1.0

0.26

0.203

Light Gate

1.74

1.72

1.70

1.72

0.811

1.00

0.58

1.2

0.34

0.276

Formulae used:

• ## S = d/t

• V max = 2V
• F = m a
• a = (V - u)/t
• T avg = (T1 + T2 + T3)/3

Calculations:

## S = d/t

Conclusion

1/100th of a second.  Making it more precise as well.

Evaluation:

Overall I think that this experiment went quite well.  The times that we got were fairly accurate, and they were not that far apart.  If I had to do this experiment again, I would change a few things that I did.  I would try to do all the experiments at once, so that if something affects one thing, it should affect them all, and you would be able to see how accurate or inaccurate the results were, as they should all be the same.

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. ## Mechanical Properties of a Meter Rule

Once the experiment was set up I started to record measurements. I recorded the time (using a stop clock) for if to take 20 oscillations. I repeated it five times and then changed the holes in which the nail went through and redid the measurements.

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

Also the acceleration of the trolley became less the more weight was put on. The method that I used was quite a reliable one and there were not very many problems that occurred from carrying out the experiment, the only slight improvement that I would do, which may not actually

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