# Physics Of Experiment Filesnewton's Second Law Of Motion

1430 Words 6 Pages
Purpose:
To investigate how acceleration of an object varies with an applied external force and the object’s total mass.

Materials: Dynamics cart Track Pulley and clamp Retort stand Mass set Motion sensor Computer interface String

Procedure: The apparatus was set up as demonstrated by the teacher. DataStudio software was opened using the Newton’s Second Law Experiment file found in the following location: I:4StudentsOUTRyanGrade 11 PhysicsExperiment FilesNewton’s Second law Experiment.ds The motion sensor was connected to a part on the interface box. The acceleration of the cart for various suspended masses and top masses was determined when the cart was allowed to run along the track. In Part A, the total
Diagram:

Pre-Lab Answers: The formula that represents Newton 's second law of motion is F=ma. In this formula "F" is the net force of the object. The "m" is the sum of all forces acting upon the object and "a" is the acceleration of the object. In order to find an unknown variable, 2 out of 3 of the equation variables need to be given, and by rearranging the equation, the unknown variable could be found. i) Based on the expression written for Newton 's Second Law (F=ma), the mathematical proportionality between acceleration and the net force is a ∝F_net ii) This is a direct relationship because both variables are proportional to each other. iii) i) Based on the expression written for Newton 's Second Law (F=ma). the mathematical proportionality between acceleration and mass is a ∝ 1/m ii) This is an inverse relationship as both variables are inversely proportional to each another. iii) In order to investigate the effect of net force on acceleration, the mass must be kept constant and in order to investigate the effect of mass on acceleration the net force must be kept constant.
The total mass of the cart is kept constant but the suspended mass changes, when the mass is changed the cart is pulled at a faster rate. If the suspended mass is 0.5 kg the cart will accelerate faster than a mass lower than 0.5 kg. It also shows that the magnitude of the acceleration will be higher if there is more applied force. The relationship is that the applied force on the cart is proportional to the acceleration of the cart. The nature of the relationship between acceleration and mass illustrated in the second graph is an inverse relationship. As one of the variables increases, the second variable decreases respective to the first variable. If the acceleration in the experiment had increased, then the mass was inversely proportional to the acceleration. The force is kept constant so if you increase the denominator then the number will be lower which would show that it is an inverse relationship. The mass slowly increases which decreases the motion. To end off, the motion does slow down when the mass

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