NAME: MANOUCHEKA FIDEL DATE: 9/19/14
TITLE: BACK AND FOURTH MOTION
PURPOSE (Introduction): To qualitatively analyze the motion of objects that move back and forth. Then analyze and interpret back and forth motion in kinematics graphs. Use kinematic graphs to catalog objects that exhibit similar motion.
PRELIMINARY QUESTIONS: Finding the average velocity
Do any of the four objects listed above move in similar ways? If so, which ones? What do they have in common? Yes, the ball and the jump both move in similar ways. Due to the acceleration to be constant for both. The pendulum and the spring move also in the same way, the difference is that the pendulum encountered …show more content…
Compare these to your predicted graphs and comment on any differences.
Was the acceleration constant or changing? How can you tell? The acceleration was constant because the space between each interval is relevant.
Was there any point in the motion where the velocity was zero? Explain. The velocity was at zero at every time it was turning back , Yes, as the velocity comes to 0.0m/s the position is 0.77m. As the pendulum must come to a complete stop.
Was there any point in the motion where the acceleration was zero? Explain. Yes, because if the velocity reaches 0.0m/s, the acceleration must also come to 0.0m/s².
Where was the pendulum bob when the acceleration was greatest? The acceleration was 3.928m/s², and its position was 0.79m
II. Dynamics Cart on an Incline
Print or sketch the portions of the position and velocity graphs that represent the time that the cart was going up and down the incline. Compare these to your predicted graphs and comment on any differences.
Was the acceleration constant or changing? How can you …show more content…
How can you tell? It was changing due to the spring resistance that acted upon the weight of the object. I can tell because the velocity kept decreasing as time increased.
Was there any point in the motion where the velocity was zero? Explain. Yes, there were actually two times when the velocity was zero. One when the object reached 0.8m and two, when the object reached 0.5m. As the spring resisted upon the object, there were limitations when the spring stretched and contracted. These limitations were the result of the two positions. Because the object must come to a complete stop at those positions in order to keep going in the opposite direction.
Was there any point in the motion where the acceleration was zero? Explain. Yes, when the object’s velocity reached 0m/s.
Where was the mass when the acceleration was greatest? In mid-air between the point of origin and the final position.
How does the motion of the oscillating spring compare to that of the pendulum? Both have a changing acceleration and is NOT constant. Therefore the spring and the pendulum will have a difference in their accelerations due to the force of gravity along resistance from the string and