The difficulty in verifying experimentally these laws comes from the fact that g has a large value, thus the falling times for typical laboratory distances is quite small (less than 0.5 s). For UEA g -9.787 m/s Equations of motion above, state that an object falls a distance proportional to the square of the time. At the poles gpoles - 9.832 m/s and at the equator gequator - 9.780 m/s. It depends on latitude and altitude of the place. Assuming that the object is falling freely from rest and considering the positive direction of the y axis to be in the direction of the falling motion, we can rewrite the above equations (1) and (2) as follow: y 1/2gtĀ².(3) vagt (4) The acceleration g has a constant value for a certain place on the globe. To calculate the acceleration for an object in free fall, the equations of motions are given by: y = v.t-1/2gt2 -01) T v=vo - gt (2) Where y is the distance traveled by the object in time t, v, is the initial velocity, v is the velocity reached by the object at this time t and g is the acceleration due to gravity. The acceleration may be calculated from measurements of distance and time, or it can be measured directly. With the Smart Timer, the acceleration due to Earth's gravity can be quickly determined experimentally. Theory: The accepted value for the acceleration due to gravity on the Earth's surface is 9.8 m/s. You will also be evaluating the accuracy and precision of three different experiments. Compare it with the theoretical value 9.80 m/s Data: Distance Time (s) Exp Acceleration (m/s) 2.00 m 2.00 m 2.Transcribed image text: Free Fall of Objects Acceleration Due to Gravity Objectives: The purpose of this lab is to measure the acceleration due to gravity of a falling object assuming that the only force acting on the object is the gravitational force. Repeat procedure 1 to 3 for three times, get the average of acceleration 5. Use equation (3) and (distance, d = 2 m, time time it took the ball to hit the ground) to calculate the baseball's free fall acceleration, 4. The stopwatch should be running before releasing the baseball to make the time measurement more accurate. Turn the stop watch on while releasing the ball and stop the watch as soon as the ball hits the ground and get the "t" value. Release the ball from an initial height of 2.0 meters. we can calculate the distance (d) an object falls if we know the time it takes to fall (t) and its initial velocity (vo) As experimentalists we are free to drop the object at any velocity, however, choosing to drop it from rest (initial velocity will be zero) simplifies our experiment and reduces the complexity of equation (1) in the process: dat (2) Rearranging equation (2) provides us with an expression we can use to calculate the free fall acceleration (a) which is equal to acceleration due to gravity : 138 Procedure: 1. Measuring the value of this uniform acceleration will be the objective of this lab For uniform acceleration, in this case due to gravity (acceleration ag for freely falling object). This constant acceleration, represented by the better has a value of 9.80 m/s. ![]() ![]() ![]() ![]() Materials: Stopwatch can use the stop watch on your cell phone), 1 meter stick, 1 hall Measurement of acceleration due to free fall) Introduction: About three hundred years ago, Galileo Galiles found that any object near the surface of the earth would fall with a constant acceleration, provided there was little or no resistance acting on it. Transcribed image text: Free Fall and Measurement of Acceleration due to Gravity Objective: Students should be able to calculate acceleration of free fall.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |