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

Investigating the Percentage Energy Loss When a Ball Bounces

Extracts from this document...

Introduction

Eva Elks – 11M

Investigating the percentage energy loss when a ball bounces

Theory:

When an object is lifted up, work is done. Once the object is in the raised position, it has gravitational potential energy. The energy it is has is the same as the work done to get there. When the ball is lifted to the height it will be dropped from it will, therefore, gain gravitational potential energy. This means that when my ball is in the raised position it will have gravitational potential energy. The equation for this is:

Potential energy = Mass x gravity x height

When the ball is dropped this is converted into kinetic energy. The equation for this is:

Kinetic Energy = ½ x mass x velocity2

However, the energy transfer is not perfect. Some of the energy will be wasted as non-useful energy, mainly heat and sound. This means that when the ball bounces upwards again, it will not have as much energy as when it was dropped and will therefore not bounce up to the same height.

...read more.

Middle

The size of the balls will effect my results because Force=Pressure x Area so a change in area would also cause a change in force.

The temperature of the ball will effect my results because if there is a higher temperature then the molecules will move at a greater speed and the ball will have more energy causing it to bounce higher.

The surface I drop my ball onto will effect the amount of energy lost because some surfaces, like softer surface, will absorb more energy and cause the ball not to bounce up as high.

To ensure a fair test I will choose one variable to change, and keep the others constant throughout the investigation. There are other variables that could effect the outcome of my investigation, for example gravity. However, gravity is always constant on the earth, and is a force of about 9.8m/s2. This would be too hard for me to change in a classroom situation. I will

...read more.

Conclusion

I will try and drop the balls straight downwards because this will make it easier when I measure the height they bounce up to, as I wont have to move the ruler too much. This will also ensure a fair test, as my results will be more accurate if I am not moving the meter rule, as moving it could mean it is not entirely straight and would cause me to take an inaccurate measurement.

I will not exert any force on the balls as I drop then, because it would be virtually impossible to keep the force constant, and would therefore make my results unreliable.

I will calculate how much energy my balls have using the equation PE = mgh,this will be PE1. I will then drop my ball and record the height it bounces up to. I will then record its potential energy, again using the formula PE = mgh, this will be PE2.

I will then find the percentage of energy they have lost using the formula:

PE2 x 100

PE1

Diagram:

image00.png

...read more.

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

  1. Investigating the relationship between drop height and bounce height when a ball is dropped.

    53 54 56 54.3 1.8 52 55 53 53.3 2.0 53 53 53 53.0 Key (m) = metres Exp = Experiment (cm) = centimetres (1dp) = 1 decimal place Engy Conv = Energy Conversion (%) = Percent Conclusion Now from the results you can definitely see many factors that need to be taken into consideration.

  2. 'The Effect of heat on a Squash Ball'.

    Both potential and kinetic energy have units of joules (j). As the ball falls through the air, the Law of Conservation of Energy is in effect and states that energy is neither gained nor lost, only transferred from to another.

  1. An investigation to find out how gravitational potential energy is converted into kinetic energy.

    action is taken as I will know what to do and when. Method Set-up the equipment as shown in the diagram. 1. Mark a line at the top and bottom of the ramp to indicate the start and finish lines.

  2. physics of the bouncing ball

    The lines of best fit indicate that all my results were very accurate and fit the line very well, being close to it. There were no anomalies because all the results fitted the patterns well. My results can tell me various things about how the bounce height of a ball is affected, particularly how drop height and material affect it.

  1. how and why temperature affects the bounce of a squash ball

    500C=(16+17+19)/317.3 600C=(22+26+24)/3=24 800C=(28+30+27)/3=28.3 900C=(31+32+32)/3=31.7 Table of Mean Results: Temperature Bounced form 20cm Bounced from 40cm Bounced from 60cm 30 5.3 9.7 16.3 40 8 14.3 22.7 50 10.7 17.3 26.7 60 13 24 29.7 80 14.7 28.3 36.3 90 16.3 31.7 43 The above shows all my results for each bounce height and each temperature collected into averages.

  2. Does the height a ball is dropped from affect its efficiency?

    into ke because rubber is a dense material and its particles are held together by covalent bonds. This is when two atoms electrons are being shared by the two atoms. These electrons spend their time between the nuclei, screening their positives charges, therefore allowing the nuclei to come closer together than if the electrons were not there.

  1. Investigation on the factors that affect the bounce of a ball.

    Also energy is used up in over coming the air resistance. The energy of impact can be split into sound energy, heat energy or light energy (spark) in the case of very heavy balls (for ex. Iron balls striking iron plate surfaces).

  2. What Factors Affect How High a Ping-Pong Ball Bounces?

    I will make sure that the angle of the ruler will be at 90o. 3. Then at each of the seven heights I will drop the ball and watch it bounce back up. I will record the height it reaches using a 15 cm ruler as a marker.

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