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

Speed Of trolley

Extracts from this document...

Introduction

Science Physics coursework

What Affects the Speed of a Trolley Running on a Runway?

Introduction

In this investigation I plan to find out what affects the speed of a trolley rolling over a runway. The speed can be affected in various ways. Below is a list of variables:

  1. Steepness of the runway.
  2. Surface of the runway.
  3. Shape of the trolley (whether it is aero-dynamical or not).
  4. Force exerted on the trolley.

One of these variables above will be used in the experiment in order to see how the speed is affected (Dependant variable). All these variables can affect the speed of the trolley by either speeding or slowing it down. For example: for variable 2, if the surface is rough, friction will slow it down, if the surface is bumpy then the trolley will either slow down or stop. Variable 4, if you exert a bit of force then the trolley will go faster. If you push the trolley it will go faster than not pushing it. In this investigation the Dependant variable is the ‘Steepness of the runway’.

Aim

The aim is to find out what affects the speed of the trolley running on a runway.

Variables

Variable 1: Steepness of the runway – trolley going downhill

Prediction: When the slope/steepness of the runway is higher the speed of the trolley will be faster.

Potential energy is the reason for the increase of velocity.

When the slope is steeper, the height of the runway increases.

...read more.

Middle

Variable 4: Force Exerted

Prediction: More starting force will result in a higher velocity.

Before we saw that the trolley it self has potential energy, but when something extra is added for e.g. a spring, then it’ll help the trolley go faster. This is because the initial force is being increased, so there is a larger initial force, in so making the trolley go faster. You can make the trolley go even faster, to do this you’ll have to compress the spring to its maximum. So again you will be increasing the force, resulting with a larger initial speed and a faster trolley.

Equipment:

Trolley

Runway

Timer

Calculator

Measuring Stick/Tape

Plan

In this experiment we plan to find out what affects the speed of a trolley on a runway. The experiment will be carefully carried out, and the steepness will be changed. One end of the ramp will be in contact with the surface while the other end will be heightened. This is so we can make the ramp steeper. The heights used will be: 30cm; 35cm; 40cm; 45cm; and 50cm. The structure of the experiment is shown below:

image02.png

The length of the ramp will be 2.38m and will not be changed. For safety I’ll ensure that everybody is at a distance from the experiment so there’ll be no accidental injuries.

In order to keep a fair test I’ll make sure that:

...read more.

Conclusion

Although the main idea has been proven anomalous results can still be obtained. To be precise the 1st attempt of the 35cm testing is inaccurate. This is because it is equal to the 1st attempt of height 30cm’s. This is the only anomalous result I have obtained so it cannot pose a huge impact and affect the main idea.

In this investigation we decided to change the gradient of the ramp by varying the height of the ramp. If I were to repeat the investigation I would make sure that the following are included:

1. Extend the ramp to expand my results and get more results which I can conclude on.

2. Also to expand the experiment include more variables and also do a preliminary test to see which is the best trolley to use for the actual experiment.

3. The ramp is cleaned with a cloth after each test so there is no dirt slowing the trolley as it travels down.

4. Also repeat the experiment more than three times for a better overall result. This would ensure reliability even more and again will help spot anomalous results.

Samirul hasan 11P

Mr Saleh

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

    Once the apparatus was set up as shown in the diagram, I rolled the trolley down the ramp 5 times for each height and then increased the height of the ramp by 5cm every time up. I did this until I had 30 readings in total.

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

    I believe that what could have happened is that the friction was far more than expected hence the trolley did not have a long enough ramp to overcome the friction and continue to accelerate. Another key point that has to be considered is energy.

  2. Factors Affecting the Speed of a Car after Freewheeling down a Slope

    My three anomalies could have been caused by: * The trolley being not started and or stopped at exactly at the same point. * Delay in starting the ticker timer as compared to leaving the trolley to role down. * The run way surface may have been uneven due to wear and tear.

  1. INVESTIGATING HOW STEEPNESS AFFECTS SPEED

    I decided to use the ping-pong ball for my actual experiment. Ball Mass (g) Steepness (cm) Distance rolled (cm) Time (seconds) Average (Seconds) 1ST 2ND 3RD Ping pong 2.4 8.5 85 1.79 1.56 1.68 1.67 Cricket 71.2 8.5 85 1.90 1.84 1.81 1.85 Practice golf ball 4.2 8.5 85 1.81

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

    By altering a the heights of the ramps and releasing the trolley down the ramp we get an indication of how far the trolley is likely to travel and we can see if there is a link between the height of the ramp and the stopping distance of the trolley.

  1. Investigating the Factors Which Affect the Motion of a Trolley Down an Inclined Plane

    Newton's Third Law: "To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts." or more commonly "For every action force, there is an equal and opposite reaction force".

  2. Investigation into the range of a ski jump

    Further plotted heights to help explain points 1 and 2: 22 68.20 4651.24 25(repeat) 71.40 5097.96 32 82.16 6750.26 35(repeat) 85.44 7300.00 Percentage error: I will take the maximum height and maximum range and calculate their percentage errors based on their uncertainty values.

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