• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Physics Spinning Stopper Lab

Extracts from this document...

Introduction

Spinning Stopper Lab        November 28th, 2011

IB Physics HL

Research Question: How does the time period of the stopper depend upon the length of the string?

image16.png

Source: http://portal.unishanoi.org/resources/Physics/Mechanics/Spinning%20stopper.pdf

The centripetal force of the stopper is from the horizontal component of tension. Since the tension is equal to the weight of the hanging mass below:

image00.png

From the diagram above, sinimage01.png

is equal to image02.png

, and therefore:

image03.png

image04.png

image05.png

image06.png

image07.png

Data:

Controlled Variables:

Mass of the stopper: 0.0175±0.0001kg

Mass of the hanging mass: 0.0709±0.0001kg

*The uncertainty for the masses came from the smallest division of the balance scale rather than half the smallest division since it was the first experience with the equipment, possibly making the measurement less accurate.

Table 1 (Length of the String vs.

...read more.

Middle

4.0

4.0

0.2

0.300

4.4

4.6

4.7

4.7

4.6

4.6

0.1

0.350

5.5

4.7

4.6

4.8

4.9

4.9

0.4

0.400

5.0

5.1

5.7

5.7

5.2

5.3

0.3

0.450

5.7

5.8

6.1

5.9

5.3

5.7

0.4

*Uncertainty value of the length of the string is from the smallest division of the instrument since 0.001m length of mark by the marker was used on the string to indicate where the length of the spring was supposed to be kept at when the stopper was spinning.

* (Average Time uncertainty) = ((Max Time)-(Min Time))/2 = (3.2-2.8)/2 = 0.2s.

*Time uncertainty was estimated to be ±0.1s since it was thought to be reasonable to estimate the human stopwatch accuracy up to 0.1 second difference.  

Table 2 (Length vs.

...read more.

Conclusion

One of the ways to improve this weakness would be to add more trials in each lengths of the string. Since the measurements of the time would differ greatly, it would be best to take more trials to get the best average possible. Another way to improve the weakness would be to have a tube that has a very low friction constant and that has a round shape at the end to reduce the friction that will narrow the speed range of the stopper at a certain length.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics 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

See related essaysSee related essays

Related International Baccalaureate Physics essays

  1. THermal Physics Lab

    > Repeat to confirm results. > Clean up Data Collection and processing: Initial temperature of the hot water: 30�C + 1 �C Initial temperature of the hot milk: 34�C + 1 �C Initial temperature of the cooler: 0�C + 1 �C Volume of hot water and milk = 0.50 +

  2. Physics Wave revision question

    ........................................................................................................................... ........................................................................................................................... Distance from L1 = ......................km ........................................................................................................................... Distance from L2 = ......................km ........................................................................................................................... Distance from L3 = ......................km ........................................................................................................................... (4) (v) Mark on the diagram a possible site of the earthquake. (1) There is a tall building near to the site of the earthquake, as illustrated below.

  1. Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

    However, the length of the string becomes an independent variable while studying the variation in tension with the length of the strings tied. Controlling of Variables 1. Applied Force The force applied is required to be constant at all points of application to prevent disparity in the tension exerted.

  2. IB Physics Lab - Resistance

    X 100 * So ((69.8K? - 67.7K?) / (69.7K?)) X 100 = 0.14% Error Analysis * In this type of experiment, human error is unlikely, but still possible. The only reason that the experimental data wasn't exactly matched with the theoretical data would be because each resistor has a tolerance.

  1. Investigate the factors affecting the period of a double string pendulum

    Then in my head, I started to count the number of waves (swing of the metal bar back and forth from its original position) and stopped the timer when I had counted 10 waves. I repeated this very step 5 times to minimize human error and get a fair average of the recorded values.

  2. Pendulum Lab

    Trial Number Time(s) needed to complete subsequent number of periods 1 period 5 periods 6 periods 10 periods Trial 1 1.2s(�0.1s) 6.7s(�0.1s) 8.18s(�0.1s) 13.75s(�0.1s) Trial 2 0.8s(�0.1s) 7.0s(�0.1s) 8.19s(�0.1s) 13.72s(�0.1s) Trial 3 1.1s(�0.1s) 7.0s(�0.1s) 8.13s(�0.1s) 13.56s(�0.1s) Trial 4 1.2s(�0.1s) 6.6s(�0.1s)

  1. HL Physics Revision Notes

    of change of distance Acceleration is a vector quantity and is the rate of change of velocity Average velocity is the change in displacement divided by the change in time. Instantaneous velocity is the change in displacement as the change in time becomes infinitely small.

  2. Rocket Physics Lab

    ± 0.005m ¾ size paper rocket (m) ± 0.005m 2/3 size paper rocket (m) ± 0.005m ½ size paper rocket (m) ± 0.005m Trial 1 1.88 2.91 3.12 2.65 Trial 2 2.25 2.93 2.65 2.92 Trial 3 2.15 3.27 3.2 2.29 Trial 4 2.75 3.35 2.54 2.5 Trial 5 2.43 3.26 2.69 2.46 Average 2.292 3.144 2.84

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