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Home Concept Builders Rotational Motion and Balance Angular Position and Displacement Directions

Angular Position and Displacement - Directions

Using the Angular Position and Displacement Concept Builder is quite simple. There are three different activities, each with a different emphasis. In each activity you will be presented with a question that you will have to answer.

In the first activity - A Degree in Rotation - you will be asked to determine the location on a diagram that has a particular angular position (given in degrees). The zero position is marked as the 3-o'clock position. The counter-clockwise direction of rotation is the positive direction. The graphic is one of a bicycle wheel that has a pair of wheel spokes separated by every 30°. These pairs of wheel spokes can be your angle-measuring tool. Once you determine the letter on the diagram that has the specified angular position, tap on the button representing that letter. The button will be highlighted in yellow and the text will be a bold red color. Tap a second time to deselect your choice or tap on a second letter. As long as a letter is selected, a Check Answer button appears. If you are satisfied with your answers, tap on the Check Answer button. Your answer will be evaluated and your Progress Report will be updated (for Task Tracker users).

In the second activity - Easy as PI - you must repeat the same procedure performed in the first activity. What makes the second activity different is that the angular position is specified in radians instead of degrees.

In the third activity - Rad Physics - you are shown the inital and final position of a point on a rotating pinwheel. You must determine the angular displacement between the two positions. You indicate your answer by tapping on one of the 10 answer buttons. When you tap on an answer option, the button will be highlighted in yellow and the text will be a bold red color. Tap a second time to deselect your choice or tap on a second answer option. As long as an answer option is selected, a Check Answer button appears. If you are satisfied with your selection, tap on the Check Answer button. Your answer will be evaluated and your Progress Report will be updated (for Task Tracker users).

Your goal is to earn "Stars" and to complete one or more activities. Stars are earned when you show success on a particular question. Once you show success on all the questions for a particular activity, you will earn the Trophy for that activity.

Concept Builder Teacher Notes