Determining Acceleration Due to Gravity

To determine acceleration due to gravity, we use a simple pendulum to determine the gravitational acceleration g of the earth's surface. Purpose: Use a simple pendulum to determine the acceleration of the earth's surface by gravity. Background ========== All objects apply gravity to each other. Large mass like the earth creates gravity field.

T = time taken for pendulum cycle L = distance between pendulum and center of pendulum (m) g = acceleration value by gravity (ms - 2) g = equipment scissors pendulum (about 300 g ) Whiteboard Plane Whiteboard Diagram HangerWhiteboard Texture Whiteboard Texture Holder Adhesive Tape 2m String * Stopwatch method uses tape to set the pivot point position on the whiteboard as shown in Figure 1 of Appendix 1 Whiteboard map Paste on magnetic whiteboard marker bracket

From long ago Galileo proved that any mass of any mass will only be accelerated downwards at a characteristic rate under the influence of gravity. Experimentally determined acceleration values ​​are slightly different depending on the location on the surface of the earth. As the earth bulges slightly outward at the equator and flat at the pole, the gravity at the pole is stronger, one of which is close to the center of the earth. Likewise, at higher altitudes, the gravity is weaker. However, in general, the acceleration of gravity is about 8 m / s ^ 2. This means that the object will fall at a speed of 8 m / s per second. At the end of 1 second from rest, it is 19.6 meters per second and moves at 8 meters per second at the end of 2 seconds. In physics we say that it will accelerate at 8 / sec which it accelerates at 8 / sec. (The customary unit in the United States is about 32.2 feet per square foot.)