Laboratory Steps And Procedures You And The Instructor Will Now Work Together Through The Different Parts Of The Laborat 1 (88.32 KiB) Viewed 25 times
LABORATORY STEPS AND PROCEDURES You and the instructor will now work together through the different parts of the laboratory. As you do this, if anything is not clear, stop the instructor and ask for him or her to clarify and answer your questions. Please fill out or perform the actions asked for in each step as you read and perform the laboratory exercises. Make certain that you understand each step before you go onto the next step. Keep good notes from the lecture and materials provided by your instructor. Do not combine your notes with the laboratory write-up. GALILEO'S INCLINED PLANE AND ENERGY We will use Galileo's inclined plane to study how energy transformations (one type of energy con- verted to a second) happens by studying the motion of a ball. We will see how different heights of the inclined plane, balls of different mass, and different timing distances d affects the speed of a ball. Using the velocity v of a ball on a horizontal track and the height H of the initial release point of the ball, we will calculate the potential energy of gravity PEgravity for the ball and the kinetic energy KE of motion on the horizontal portion of the track and compare their values. We will investigate the loss of energy from friction between the rolling ball and the track. This energy loss is due to heating up of the ball and of the track from friction. This loss of energy is in the form of thermal energy. Question: Explain how energy is loss between the rolling ball and the track and what is the result for this loss of energy. What type of energy is this loss converted to? Set up the following inclined plane setup: G2 G1 21 Make certain that you release the ball from the same spot for each trial. It is also imperative that as the ball is released to not give it any motion from your hand. Practice the ball release before you perform the experiment.
We'll perform the experiment and fill out Data Tables 1-4. At the end, we'll analyze the data to make sense of what we measured. Please answer all questions along the way. We will use two balls of different mass, two different heights H and two different measurement distances d to calculate the speed of the ball after dropping height H. Make certain that as you change from Mass 1 to Mass 2, from d, to d₂ and H, to H₂, change them as close to a factor of two as you can. This way any differences will be significant. Table 1: Keeping the height H and the distance d the same, change the value of the masses. Fill out the Data Calculate the velocity using the average time and the distance d: d HEIGHT H₁ = MASS 1 = DATA TABLE 1. TIME TRIALS 1 TIME TRIAL MASS 1 1 2 3 AVERAGE TIME T VELOCITY TIME (SECOND) V= DISTANCE d, =. MASS 2 = TIME TRIAL MASS 2 1 2 3 AVERAGE TIME T₂ VELOCITY Edi DISTANCE d₂= MASS 2 = TIME (SECOND) Now, keeping the height H the same, change the length between the gates d. Record the informa- tion again for this new setup in Data Table 2. HEIGHT H₁ = MASS 1 =
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