Items Used: Vernier Wireless Dynamics Sensor System, MegaNet BTOES 2.0 USB Dongle, string, computer, projection system Notes: When the accelerometer is held perfectly horizontal, it reads approximately -g. This is because we are accelerating upward at approximately 9.8 m/s^2. Thus, when calibrated properly, the accelerometer is set to read 0 when no net force acts on it, so that it reads approximately -g at the perfectly horizontal position (since it accelerates upward at an acceleration ~ g), and approximately 2g at the bottom of the swing. Math Description: => mgr = (1/2)mv^2 => (v^2/r) = 2g
Instructor Page
Size: Varies Condition: Good Hazard: None.
|