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

Physics Lab Relative Density

Extracts from this document...

Introduction

Varij Gosine

Experiment-Measurements and units

Aim-

  1. To determine the relative density of a cork bung
  2. To determine the relative density of the material from which a drawing pin is constructed.

Theory-Relative density is the ratio of the density of a substance to the density of a given reference material (usually water). When the when the relative density of a substance was less than the density of water the substance floated and when the relative density of a substance is greater than the density of water the substance sunk.

Variables

  • Controlled-amt of water in displacement can,
  • Manipulative-
  • Responding-mass of cork bung, volume of cork bung and sinker, volume of sinker.

Apparatus-

   Cork Bung Experiment

  • sinker
  • cork bung
  • displacement can
  • 100ml Class B measuring cylinder
  • triple beam balance
  • 250ml beaker.

...read more.

Middle

image01.pngimage02.pngimage04.pngimage03.pngimage02.pngimage02.png

image06.png

Method-

Cork Bung Experiment

  1. The displacement can was filled to the spout
  2. The cork bung was tied to the sinker and placed in the displacement can
  3. The water displaced water was collected in the 250ml beaker and then transferred to the 100ml measuring cylinder
  4. The reading was recorded
  5. Steps 1-4 was repeated using the sinker alone
  6. The cork bung was placed on the triple beam balance
  7. The closest weight was moved until the triple beam balance was leveled to the 0 mark
  8. The reading was recorded

Drawing Pins Experiment

  1. The displacement can was filled to the spout
  2. 10 pins was placed in the displacement can
  3. The water displaced was collected in the 250ml beaker and then transferred to the 10ml measuring cylinder
  4. The reading was recorded
  5. 10 pins was placed on the triple beam balance
...read more.

Conclusion

Discussion-This lab was fairly challenging but it was completed with satisfying results. This experiment with the cork bung can’t be improved and no trends were noticed when looking and the results taken. The experiment with the drawing pins could be improved by using a greater amount of pins when doing the experiment to find a more accurate reading by finding the average of more pins.

Conclusion-Within the limits of experimental error the relative density of a cork bung was found to be 0.1758 and the relative density of a drawing pin was found to be 3.7084.

Measurements and Units

...read more.

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

See related essaysSee related essays

Related GCSE Forces and Motion essays

  1. Peer reviewed

    Hookes lab

    3 star(s)

    * The same apparatus should be used always so that the uncertainties remain constant for every trial. * It should be made sure that the hands are not in contact with the spring as the spring can cause an extra force on the spring and cause anomalies.

  2. Hookes lab Siddharth Nair

    * It should be made sure that the pointer of the spring is completely horizontal; therefore correct measurements of the extension will be taken from the meter-rule and so errors will be reduced. * It should be made sure that the clamp stand is very stable so that the spring does not oscillate and cause anomalous results.

  1. Comparing the density of skimmed milk and homogenised milk

    The reasons for this may have been because you could not get the drop of milk to be the same density each time as it was very difficult to be accurate with the 1cm syringes that we were using.

  2. Parachutes Lab

    Conclusion: 1. Our first hypothesis stated, "The surface area of a parachute affects the time it takes to travel a calculated distance, and the speed at which it falls." We were able to prove this hypothesis right via the data we collected and our observations during the experiment.

  1. Hooke's Law Lab

    When a force of 1N (100g) is applied, the extension produced is only 0.45 cm and when a force of 5N (500g) is applied, the extension produced is 14.95cm. This shows that the extension produced by the spring is over a very short range.

  2. Planning experimental procedures

    � Mass of trolley - mass is also included in the formula for potential energy and so could affect the speed of the trolley one way or the other. As with height, this will be varied but only in the second experiment.

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