Projectile Motion

Topics: Measurement, Vernier scale, Experiment Pages: 2 (547 words) Published: October 28, 2008
Experiment 4
Projectile Motion

We examined projectile motion by observing a ball rolling down then leaving the ramp, thus becoming a projectile with a horizontal initial velocity. We measured the horizontal initial velocity using the photogate and computer. We measured the horizontal and vertical distances that the projectile traveled from the end of the ramp to when it hit the floor my using a meter stick to measure

Experimental Set-Up
In our experiment, we used the following: ramp, photogate, steal ball, plumb bob, meter stick, and vernier caliper.

Experimental Procedure
1.At the edge of our lab table, we prepared the ramp.
2.Exactly below the launch point, we marked a point on the floor by using the plumb bob. 3.We determined the vertical distance that the ball fell (mm) from when it was launched from the ramp and fell on the floor. We then entered this in our data table. 4.We positioned a piece of paper on the floor to where the ball would land. We put the carbon paper above the paper and taped them to the floor. 5.We fixed the photogate so the ball rolled out and the light beam was blocked and unblocked. The photogate was plugged into the LabPro Dig/Sonic1 port. 6.We opened up the One Gate Timing from the Logger Pro folder. 7.We measured the diameter of the ball with the vernier caliper and recorded it in the computer so that it could calculate the ball’s launch velocity. 8.We launched the ball from a specific height from the ramp so that the ball hit the carbon paper and marked a point on the paper below. We determined the horizontal distance and measured to the nearest millimeter using a meter stick. The initial velocity of the ball after it leaves the ramp will be given by the LabPro program. 9.We repeated step 8 from various heights five different times and recorded data. 10.Calculate Theoretical yield and % difference

Experiment (4) Data Table

Height of ramp's lower end above the floor,...
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