• 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. Physics Wave revision question

    At t = 1.0 ms: ............................................................................................... ............................................................................................... At t = 8.0 ms: ............................................................................................... ............................................................................................... (3) (Total 6 marks) 56. This question is about waves. (a) With reference to the direction of energy transfer through a medium, distinguish between a transverse wave and a longitudinal wave. ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ......................................................................................................................................

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

    To keep the length of the string constant, colored marks were made on the string and tied appropriately to the supports. Firstly, at a length of string = 140 cm, data was collected for 10 points of application of forces.

  1. Finding the Spring Constant

    � (28.701) (x 100)] =9.5 % (From the looks of the %error, we can conclude that there are errors and omissions). The difference between the uncertainties is: 4.049 - 4.007 which is � 0.042. This shows that the difference between the actual values and uncertainties between the theoretical value (taken from the book)

  2. THermal Physics Lab

    in the diagram > Use a measuring cup to measure the 500 ml of water and milk > Place both of them in the microwave and heat them for 4 minutes. After heating them, put both of them separately in two troughs > Don't put the lid on and put both of them in the cooler.

  1. Pendulum Lab

    for all times acquired. **For the numbered trials it should be noted that the values for 1 period and 10 periods were acquired in a different trial from 6 periods and 5 periods. There are actually ten trials in total, they have been grouped in the following charts for simplicity

  2. HL Physics Revision Notes

    Speed and acceleration work in the same way Equations for uniformly accelerated motion can only be used when the acceleration is constant, i.e. uniformly accelerating in the same distance. Equations of uniform motion: u = initial velocity v = final velocity a = acceleration t = time s = distance

  1. Rolling objects down a ramp Physics LAB

    It made it much longer because we had to convert inches into centimeters to sub in into our formulas. If we had made a wooden ramp with supports (posts) going from the floor to the highest point of the ramp and the other side resting on the ground it would

  2. Rocket Physics Lab

    Secure the meter stick and launcher with the plastic bottle section placed parallel to the ground. Secure tape measure from directly below the top of the launcher and spread it out straight with respect to the launcher. Measure twenty centimetres away from the plastic bottle and place a marking.

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