![]() Thus if the angular effect on the period is to be ignored, the angle should be less than 30 degrees. If the angle is 30 degrees, you must add 2% to expected value for the period, for 60 degrees, 11%, and for 90 degrees, 45%. Most people are surprised to learn that the mass has no effect on the period, and that the angle of the swing has only a small effect. Other variables, such as mass of a pendulum bob and the size of swing, could also be explored. The activity also introduces use of significant digits.Īctivity #3, “Pendula on Parade” This activity is appropriate for middle or high school students and is designed to introduce the relationship between the period of a pendulum and the length of the pendulum. Time intervals can be equal for different initial times (e.g., the time interval can be the same for several class periods even if the class periods start at different times.) For studying motion, we are often interested in the time interval, which is generally just called “time.” This activity is appropriate for middle or high school students, and has a goal of distinguishing between time as an instant and time as an interval. The symbol Δ t represents the time interval while t f represents the instant of time at the end of the interval, and t i represents the instant of time at the beginning of the interval. A time interval is always the difference between two instants in time (i.e., a time interval = Δ t = t f – t i). ![]() When we ask, “How long (i.e., much time) does it take to drive home?”-we are referring to time as an interval. When we ask, “What time does class end?” we are referring to an instant in time. Activity #1, “Significant Times” What does the word “time” mean? ( Pair Share) 2 Discuss time as an instant vs. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |