Non-Intuitive Results of Simple Experiments

A scientific experiment carried out on earth are told to be non-intuitive. There are several factors on this planet that can alter the result of the analysis. From this scientist would time to time conduct a constant amount of trial to minimize the error caused by this natural effect. Just like in a case of a falling object, the result of a falling object on earth and another planet would be significantly different. Through this experiment, we would like to see what, why, and how the result of the falling object would be different.

Hypothesis

The force of throwing an object upwards vertically has different characteristics than the object falling upwards. The force that has been applied to an object upwards attains momentum to travel upwards. Which the gravity pushes down on an object to cancel out the initial velocity of the object towards zero. Gravity is independent of the mass of an object. Galileo has proven the world of his law of falling object that states that the velocity in each to increase the amount of time the object is falling in natural acceleration due to gravity. (Naylor, 1979) A falling object would accelerate continuously, which increases the amount of velocity over time. Although when we are living in on this earth, larger mass seems to affect the speed of a falling object. Conducting a scientific experiment on earth would not always give you an exact result from the math that you did.

There are always different variables that affect the course of the experiment due. In reality, air resistance, influenced by the cross-sectional area of the ball and its speed, will determine the ball’s terminal velocity. (Colorado State University-Global Campus, 2017) The air resistance and the force of gravity acting upon objects cross out the momentum of the object of falling, which would eventually affect the speed of an object. To put this in perspective, if an object with a larger mass and a smaller mass are dropped at the same time, the amount of air density would affect the difference of the time of the two falling object.

Variable and Control Groups

To put this in perspective, we would be dropping five pound bowling ball and a balloon, which is one gram, from a height of fifty meters. We would also be carrying out a similar experiment, dropping the bowling ball and the balloon at the same time. However we would be dropping the object inside a vacuum. To minimize the error, we would be conducting the experiment that is for outside the vacuum at an indoor stadium. We would be able to reduce the change in the result by wind and heat. In this experiment, we would measure the time each object traveling from the falling point to the dropping point, twenty times. As we write down the time of which the ball drops to the ground twenty times, we would like to see the mean of the time for our final result. We would like to see the difference of the dropping objects that are the difference in mass by the density of air.

Data

 

In a stadium

In a vacuum

No. bowling ball 5lb (sec) balloon 1g (sec) bowling ball 5lb (sec) balloon 1g (sec)
1

5.874

247.366

3.193

3.193

2

5.89

249.87

3.195

3.19

3

6

246.41

3.199

3.193

4

5.974

247.87

3.19

3.195

5

5.961

248

3.195

3.19

6

5.874

247.43

3.193

3.195

7

5.875

246.55

3.195

3.193

8

5.7

247.39

3.193

3.19

9

6

247.37

3.19

3.193

10

5.75

248

3.193

3.195

11

5.7

247.41

3.193

3.195

12

6

247.5

3.195

3.193

13

5.7

246

3.19

3.19

14

5.75

248

3.193

3.193

15

6

247.397

3.19

3.193

16

6

247.388

3.193

3.195

17

5.7

246

3.195

3.193

18

5.86

248

3.19

3.19

19

5.87

247.38

3.193

3.193

20

6

246

3.195

3.199

Mean

5.874sec

247.367sec

3.193sec

3.193

From our experiment, we had found that when a five-pound bowling ball was dropped fifty meters high, the time that the bowling starts falling and hits the ground would take an average of 5.874 seconds. The balloon took an average of 247.367 seconds to hit the ground. The difference between the time of the bowling ball and the balloon hit the ground is 241.49265 seconds. There is a large gap between the two, which the major characteristic they had to each other is the mass of the object.

The results of the experiment of dropping an object in a vacuum shown very contradicting results. The results revealed that when a bowling ball and a balloon are dropped at the same time, inside a vacuum, they both hit the ground at almost the same time. The bowling ball has also have traveled two seconds faster. The significant difference in the experiment in a vacuum, which shows how that the density of air affected substantially in a falling object. It is said that air resistance, does not depend on mass, only on the density of air, the shape of the object, and the velocity of the object, as the force is the same for objects with the same shape and speed but different masses, but the momentum is different, and thus the change in velocity will be different. (Orzel, 2015) The mass of the object rather increases the momentum of the falling object, which changes the speed when the object is falling through the air. Air resistance was the primary cause of this event. The law of motion shows that the mass of an object does not affect the speed of a falling object. Air resistance cancels out the force of an object falling downwards.

Conclusion

Through this experiment, we were able to understand that a falling object measured on earth and another planet would be different in speed. The density of the air would the main reason why and by having no air, the force of a falling object would not be affected by the mass. A scientific experiment carried out on earth are non-intuitive. It is always important as a scientist to perform an experiment that can be accurately measured and proven.

References

CSU-Global (2017). Introduction to Physics with Lab, Module 2: Describing

Objects in Motion. Greenwood Village, CO.

Naylor, R. (1979) The Role of Experiment in Galileo’s Early Work on the Law of Fall. Annals of Science,

37(4), 363.

Orzel, C. (2015) The Annoying Physics Of Air Resistance. Retrieved from

https://www.forbes.com/sites/chadorzel/2015/09/29/the-annoying-physics-of-air-

resistance/#4cd62e68718a

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