Apparatus: Stop watch (May use stopwatch in your phone) A measuring tapes Ball Experimental Procedure 1. Hold the ball from a certain height Y of 3 m. 2. Drop the ball and measure the time it takes the ball to fall to the ground. 3. Repeat step 2 for 2.5 m, 2.0 m, 1.5 m and 1 m and record the time of fall each time in the table below. 4. Calculate g using g = 2Y/tavg2 for each height and then find the average value of g. 5. Plot 2y (Vertical axis) vs. 12 avg(Horizontal axis) 6. Find the slope of the line and compare g average and compare it to the calculated value.\fAcceleration Due to Gravity Db'eotive: [the objective of this lab is to determine the acceleration due to gravity near the earth's surface by dropping a ball from a certain height and to see if different sizes of objects fall at the same time or not. Introduction In this lab. we are going to ignore the effect of air resistance. 1:nlhen we drop an object near the surface of the earth. it will travel down with a constant acceleration g= 9.8 ms: on the way down and g=-9.8 mfss on the way up. This falling object obeys the kinematic equation which is given by: dy = vn + 1s gt: where by is the displacement of the falling object in time t. For an object initially at rest falling in a gravitational eld. the previous equation reduces to y =14 gtz where y is the vertical height and t isthe time of fall. In this lab. once we measure the time it takes a freefalling object to fall a certain distance. we can determine g. 111eor1: lGravity is what makes things fall down; but what is gravity? Sir Isaac Newton tried to explain gravity by seeking out the laws according to which it acts. Objects near the surface of the earth fall toward it with an acceleration. due to the gravitational attraction of the earth. Howr can the earth make bodies fall toward it? Has the acceleration due to gravity always stayed the same or does it change? These questions and others about gravity have yet to be answered. In doing this lab: you will become more familiar with the effects of gravity on falling objects by measuring the acceleration due to gravity experimentally and compare it to the accepted value of 9.8 rnl'seco