E1 01: Newton’s Second Law of Motion

Rhose Anne C. Garcia

(School of Electrical, Electronics and Computer Engineering , Mapúa University , Philippines )

Results and Discussion

The experiment aim ed to verify if the Newton ‘s Second Law of Motion is true and accurate. First a series of trials

stating that a mass of the cart stayed constant meaning no set of weights were added while the force is changing by adding

more weig hts on the weight hanger. Then students perf ormed part two in which the force of the cart stayed constant

meaning there is no added weight on the weight hanger while the mass of the cart is changing by adding more weight on

it. In the t hree sets of trials performed, below is the graph to see the accuracy of the data being experimented.

Graph 1 . Constant Mass, Changing Net Force

This graph illustrates the direct proportionality of the force acting on the object to its acceleration provided that the mass

is constant which produced an equation of y = 2.1445x + 0.0534 .

Graph 2. Constant Net Force, Changing Mass

This graph illustrates the inverse proportionality of the acceleration and the mass p rovided that the net force is constant

which produce an equation of y = -1.9137x + 2.81.

y = 2.1445x + 0.0534

0

0.5

1

1.5

2

2.5

0 0 . 2 0 . 4 0 . 6 0 . 8 1 1 . 2

ACCELERATION, A (M/S

2)

NET FORCE, M2G (N)

y = -1.9137x + 2.81

0

0.5

1

1.5

2

0 0.2 0.4 0.6 0.8 1 Acceleration, A (M/S

2)

Mass of Cart, M1 (kg)

Conclusions

After a series of trials in the experiment , the students observed the application of Newton ‘s Second Law of Motion.

Students utilized a cart on a dynamic track, a weight hanger , photogates and a smart timer to record the change in motion

of the dynamic cart. The researchers concluded that the acceleration is direct ly proportional to the force acting on the

object provided that the mass is constant but inverse ly proportional to its mass provided that the net force is constant.

The percent differences were conducted, but some e rror may have been occurred from the uneven and frictional force of

the dynamic track in the horizontal direction. The main principle of this experiment is applied to the motion of people in

everyday lives such as hitting, throwing or kicking a ball wherei n a certain distance and force is vital. Without applying

any force, an obje ct will remain at rest therefore it will not accelerate.

References

Lucas, J. (2017). Live Science. Force, Mass ; Acceleration: Newton's Second Law of Motion . Retrieved from

https://www.livescience.com/46560 -newton -second -law.html

Figure 1. Acceleration dependent to the

net force of the object

Figure 2. Acceler ation is dependent to the

mass of the object