The string will be used to tie the parachute to the small tin which will be used to hold the masses. The scissors will be used to cut out the parachute properly and also to cut four pieces of string. We will use the masses in order to test our hypothesis. Also, we will use a stopwatch to calculate the time it take for the parachute to fall to the ground as the time is our dependent variable. .
Method.
First of all we are going to make the parachute, this will be done by cutting a square shape from the plastic bag, which will be measured 30cm by 30cm using a ruler. Then, we will use the scissors to make a small hole in each corner of the square, this is so that we can put through the pieces of string. Then, we will carefully cut out the square using scissors. We will then need to have four pieces of string so that one can go through each of the holes, therefore, we will measure 30cm of string and cut it. We will then thread the pieces of sting through the holes and then join all four strings together and tie it tightly to a small tin. .
After we have made our parachute, we will place a mass into the small tin, starting from the smallest mass which is 20g, and drop it from a specifies height which is 4.75m. We will get the stopwatch and time how many seconds it takes to reach the floor and the results will be recorded in a table. We will repeat this 5 times and after we have tested the 20g, we will move on to 40g and so on by doing the same steps. When recording the results we will write the time in seconds to 1 decimal place as it will be easier to compare the times. .
The method will make my experiment a fair test because as it is being repeated 5 times for each of the masses, it will enable me to get reliable and accurate results, therefore, it will limit from any anomalies occurring. Also, the height will be a controlled variable, as we will drop the parachute from 4.75 m of height and this will help us to get an accurate set of results.
