• 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
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9

Find out the breaking distance of a trolley car going down a ramp when an independent factor is changed.

Extracts from this document...

Introduction

Physics Investigation By Christopher Stylianou Aim The aim is to find out the breaking distance of a trolley car going down a ramp when an independent factor is changed. Factors All the independent variables, which could affect the investigation of Breaking Distance, are: > Speed of Vehicle- By changing the speed of the trolley car, it could change the Breaking Distance. > Friction of Wheels- By changing the amount of frictions on the wheels, it could change the Breaking Distance. > Surface Material- By changing the surface material the trolley is travelling on, it could change the Breaking Distance. > Gradient of Slope- By changing the gradient of the slope, it could change the Breaking Distance. > The Breaking Force- By changing the breaking force applied to the trolley car, it could change the Breaking Distance. > Mass of the Vehicle- By changing the mass of the trolley car, it could change the Breaking Distance. Investigation I have decided with the research I have below to investigate the change of breaking force independent variable. This is because I can use a range of different weights applied to the trolley car as it travels down the slope. E.g.: - 100g of breaking force, 120g of breaking force etc... Then, by marking where the breaking force is applied and where the trolley car actually stops, I can work out how far the trolley car has travelled. I can work out the Potential Energy at the beginning of the ramp, where the breaking force is applied and the Kinetic Energy at where the breaking force is applied to see how much work is done in stopping the vehicle. Lastly, I can work out the de-acceleration of the trolley car and see whether it increases or decreases when the breaking force is increased. Research * Breaking Force - The force that is applied to a vehicle that is moving to slow or even stop the vehicle. ...read more.

Middle

Repeat experiment until no anomalous results occur. Fair Test: - To make it a fair test you must carry out these precautions: - * The measuring is accurate of the breaking distance. * The right amount of weight is used. * The trolley car is not changed during experiment. * The trolley car is not pushed down the ramp with force. * The ramp gradient/height does not change. * The other factors that could affect the results are not changed. Safety: - To make it a fair test you must carry out these precautions: - * Bags and Stalls are put on the sides of the room, out of the way of any experiment. * The normal Science Labs rules must be obeyed. * Be careful and make sure weights don't drop on the floor. Results: - Before experiment carried out: * Mass of the trolley car = 970.0 grams * Height at top of ramp = 27.2cm * Height where braking force applied = 18.0cm * Average speed of trolley car before breaking force applied: - Ticker timer tape There are 16 x 1/10 and 2 x 1/10 which equals: (16 x 0.1) = 1.6 + (2/50 which is also 0.02 x 2) = 0.04 1.6 + 0.04 = 1.64s Put this into the equation: Average speed of trolley car (m/s) = Distance travelled (m) � Time Taken (s) 1m � 1.64s = 0.610m/s Results of experiment Breaking Distance and Time: (X = Anomalous Result) Mass of Breaking Force (g) Results 1 Results 2 Result 3 Average Distance Travelled (mm) Time (s) Distance Travelled (mm) Time (s) Distance Travelled (mm) Time (s) Distance Travelled (mm) Time (s) 100 835 1.80 841 1.82 - - 838.0 1.810 110 631 1.61 633 1.66 - - 632.0 1.635 120 523 1.39 520 1.38 - - 521.5 1.385 130 440 1.33 438 1.26 - - 439.0 1.295 140 350 1.16 354 1.21 - - 352.0 1.185 150 295 1.06 301 1.12 - - 298.0 1.090 160 210 ...read more.

Conclusion

However, I don't believe that they are part of a new trend in this investigation, but if I was to change a different independent variable then they might be. I believe our results were accurate enough for this investigation to provide reliable, usable results for my analysis and conclusion. All my results seem to lie just next to or on the line of best fit drawn on the graphs and this has help me produce a firm, well supported conclusion. But, as I said in the conclusion we can only draw an almost inversely proportional graph, unless we measured everything to precision using expensive 100% accurate equipment, but there is no need for this. Maybe if we followed this investigation up that could be looked into and added to the method. I could also used data login techniques to get much more accurate times by using sensor to tell when the vehicle passes the braking point and how long after it takes for it to stop. I could carry out the experiment again using a different method to get the same results. Instead of using pullies and weights on strings attached to the trolley car, I could attach a piece of flat rope and thread it through a friction block with different mass's on it to add more or less friction to the vehicle to stop it. Here is a diagram of the experiment: - From this, I would be able to get the same results that I have achieved from the method I have carried out for this investigation and could compare them to make sure this is true. I could also concentrate on working out just one result of this experiment, i.e.: - de-acceleration, energy used to stop the vehicle or the distance the vehicle travels. By doing this I could extend my experiment and find out a bigger range of results to support the conclusion even more so. I got my research from the Physics GCSE textbook, past preliminary work and class work note in my exercise book. ...read more.

The above preview is unformatted text

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. Rolling a Car down a ramp.

    Obviously, this won't be necessary for a simple prediction, but it shows that the higher the ramp is raised, the higher the velocity of the trolley will be resulting in a quicker time to reach the finish line. I can also predict from this formuIa, the shape of the graph v against h.

  2. What affects the acceleration of a trolley down a ramp?

    Unfortunately friction would prove a difficult variable to do an experiment into because of the minute difference in results from different surfaces and our inadequate timing methods would not be able to find sufficient evidence to support any theory. I have decided to do an experiment into how the height

  1. Investigation is to see how changing the height of a ramp affects the stopping ...

    It will calculate the speed by seeing how long it takes to break the light beam of the light gate. This is the calculation that it is going to carry out: SPEED = DISTANCE / TIME SPEED = DISTANCE OF CARD / TIME THAT TOOK CARD TO PASS LIGHT BEAM

  2. Investigation of the speed of a trolley down a ramp and its gradient

    It will slow the trolley down and produce heat and sound. In this experiment there will be dependent, independent and control variables. The independent variable will be the height of the ramp. The dependant variable will be the acceleration of the trolley as it will depend on the height of the ramp.

  1. An investigation into the acceleration of a trolley up a ramp.

    energy is the same value as the gravitational potential energy as the pulley mass starts with no KE because it starts in a stationary position; 0J + 1.5J= 1.5J Make a quantitative prediction of what you think will happen. Justify your prediction using your scientific knowledge.

  2. The experiment consisted of recording the results of a small toy car being allowed ...

    Instantaneous Acceleration: This is the change in velocity during the previous time interval, calculated by dividing the current velocity minus the previous velocity, by the time difference between the two velocities, which again, is always 0.1 seconds. This information is also shown in the table below.

  1. An investigation into factors that effect the braking distance of a trolley

    We could link this to Newton's second law, which suggests if there is an unbalanced force, then the object will accelerate in that direction. Therefore, as the height the ramp is increased, Gravitational Potential Energy is increased and hence more Kinetic Energy would be present and as a result the car would have a bigger Braking Distance.

  2. Investigating how far a car travels after rolling down a slope.

    Record this distance in a results table. 6. Replace the car at the top of the ramp. 7. Carry out the experiment 3 times for each height/weight to gather a reliable set of results. Preliminary Work: As I have already stated above I am going to investigate what effect the angle (height)

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