FC: Balanced and Unbalanced Forces | Physics Lab Report
1: The sum of two or more vectors is called a resultant, while an equilibrant is a vector that can exactly balance the resultant. When forces act in opposite directions to one another, they are being balanced. In this lab we will measure the equilibrant and use that value to determine the resultant. | Introduction
2: Objectives | Practice vector addition using components. | Observe the relationship between the resultant and the equilibrant. | Gain experience using a simple force table. | Determine the weight exerted by a know mass.
3: Procedure | 1. First the masses where attach to the strings. 2. The pulleys were arrange so that string 1 is positioned directly over 0 degrees mark and the string 2 is positioned over the 55.0 degrees mark. 3. The third pulley was moved to the left or right until the ring in the center was exactly centered over the peg.
4: 4. The angular position of string 3 was estimated to the nearest tenth degree and recorded the measurements on table 1. 5. All information and calculations were recorded on table 1. 6. The mass on string 1. was replace with one of 150.g. The pulley was kept at 0 degrees. 7. 50.g were added to the 200.g mass on string 2. and the pulley was moved to 65.0 degrees. 8. Approximately 340.g were placed on string 3.
5: 9. The pulley containing the string 3 was moved to the left and was added additional mass to the string until the ring was centered over the peg. 10. The magnitude of the force for each string and the direction of the third string was recorded in table 1.
6: Results | Force Table Angles And Forces | Table 1
7: Postlab Exercises
9: Conclusion | 1.An equilibrant is a vector that can exactly balance the resultant. 2.The sum of two or more vectors is called a resultant. 3. If three or more forces act in opposite direction, with the same magnitude, they are balanced.