Talula Dempsey 8x Science Title: How Different Variables, Mass, Length, and Amplitude, Effect the Period of the Pendulum. Question: If we change the mass of the bob, will it change the period of the pendulum? If we change the amplitude of the pendulum will it change its period? If we change the length of the string connected to the pendulum, will it affect its period? Materials: -Pendulum kit ( 4 washers, 25 cm string, 40 cm string, 20 cm of string, two metric rulers) -Protractor -Duct tape -Scissors -Flat surface Method: Exploration one: amplitude Procedure: Set up your pendulum and examine amplitude: 1. Tape down two rulers to the table about 6 inches apart so that several inches stick out beyond the edges of the table. see Dr. Figueroa …show more content…
I thought that because of F=MA or force = mass times acceleration, the force and acceleration would be greater because of the increase in the mass causing the period to decrease.I, however, was wrong. By changing the mass, the period will stay the same because the gravity and inertia will stay the same no matter the mass. Gravity is based on the object going from left to right, or the object being drawn to earth while inertia is the object going right to left, or the movement of the resistance of the object.Using Galileo's law of physics I also realized that since he dropped two different objects, the objects fell at the same acceleration, means that the mass would not affect the period. Length is the measurement of something from end to end. For the length, I predicted that the period would decrease due to the string being lengthened and the ability for it to move back and forth more efficiently. I did obtain, through multiple tries, that the period of the lengthened string would decrease. The pendulum will have a higher frequency because it will travel faster due to the length.Amplitude is the angle measured from the position of equilibrium.I also hypothesized that the amplitude of the pendulum would increase because the greater the angle the longer the period. I procured that by having a greater amplitude, the period will stay the …show more content…
Using newton's law, For every action there is an equal and opposite reaction, I realized that by having the mass of the washers pulling down on the pendulum, gravity moves forward while inertia would strike back. The relationship between the length of a pendulum and how long it takes to swing back and forth ten times relates to the simple fact that the longer the string the faster while the shorter the string, the longer. This causes the period to be shorter or longer depending on the size. On the other hand the relationship between the amplitude of a pendulum and how long it takes to swing back and forth begins with being the angle at which the pendulum starts at. I originally thought that the angle would change the period but it just changed the equation not the actual