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

How Surface Area Of Vanes Effect The Rate At Which A Weight Drops.

Extracts from this document...


How Surface Area Of Vanes Effect The

Rate At Which A Weight Drops

Aim – To see if the surface area of a wind vane affects the rate at which a weight drops from it.

Hypothesis – I predict that by increasing the surface area of the vanes on the wind vane, I will increase the air resistance therefore slowing the rate at which the weight will drop.

Primary Work – If a piece of paper and a marble are in free fall, they will fall at the same speed, so they should hit the ground at the same time. If you test this by just dropping a marble and a piece of paper you will find it is not true. This is because the objects are not in free fall. To be in free fall, gravity has to be the only force acting on the objects. When you just drop something, there is also air resistance. Air resistance is a type of fluid friction.

...read more.


StandClamp20g Weight55cm of StringAxelCork With Equal Slits For VanesCard For VanesStopwatch

Method –

  1. I will set up the equipment as shown below.
  1. I will cut out 6 vanes with a certain surface area and put them into their corresponding slits in the cork.



  1. I will coil the string attached to the weight around the axel and then drop it. I will time the time it takes for the weight to hit the table and record my results.
...read more.


























Graph Of Averages –

= Line Of Best Fit


Conclusion – I have found that I was right in my hypothesis in thinking that the larger the surface area of the vanes on a wind vane, the more time it takes for a weight attached to it by means of an axel to fall. This was because, as stated in my theory and primary work, the surface area increased the amount of air resistance and this force opposed gravity which was pulling the weight down, therefore making it travel slower. This is shown in my graph as a positive correlation.

Evaluation – I had no major anomalous results, this was down to accurate measuring and because I kept my experiment fair. After doing this experiment I would like to be able to calculate the actual amount of air resistance created by a wind vane and see if there is any relationship between surface area and amount of air resistance.

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Mechanics & Radioactivity 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 AS and A Level Mechanics & Radioactivity essays

  1. Objectives: To determine the center of gravity of a body of irregular shapes

    The pin is very sharp; it may hurt us. To ensure safety of students, the optical pin should be always pointed away from the students to avoid any accident. Secondly, in the experiment, the bob is under SHM, it will swing side by side with large amplitude.

  2. The aim of this investigation is to find out the effect of surface area ...

    RANGE: I will use the following length surface areas (7cm,6cm,5cm,4cm and 3cm) PREDICTION: I predict that as the surface area of a falling object decreases, the object will fall faster. This is because as the wingspan gets smaller there will be less air resistance pushing up on the object so it will fall faster.

  1. Investigation to find out whether changing the surface area of the wings on my ...

    Drag depends on the speed of an object- the faster it moves the greater the drag. Therefore, if one of my helicopters is moving faster than another, then it will create more air resistance. Drag also depends on the shape of an object.

  2. Serving Newton

    because these effects were scientific mysteries at that time.. Since Newton's time, much has been discovered and alterations made to Newton's theory. But these changes were at great cost. Although new words and definitions clarified Newton's laws, the nineteenth century scientists and mathematicians who resolved Newton's initial mistakes and omissions, feared scientific outrage, for Newton, the legend, grew more powerful in death.

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