Christina Wong
Wilson Wong
Aaron Yanich
Adhitya Venkatesh
Marble Lab Reloaded
I.
Purpose:
The purpose of this lab is to calculate and predict the landing point of a marble that
rolls off a ramp and lands on the floor.
II. Procedure:
1.
We found the height of the ramp and the distance off the ground
2.
We calculated the initial velocity of the marble as it goes off the ramp
3.
Used laws of conservation of energy and the rotational kinetic energy of a solid
sphere to calculate the marble’s landing point
4.
We launched the marble towards the target and carbon paper
III. Data Table
Height of ramp above table (m)
Height of tabletop above ground (m)
0.31
0.91
IV. Diagrams
V. Calculations
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Including Rotational Kinetic Energy:
By conservation of energy, we can write
mgH
ramp
= ½ mv
2
+ ½ Iw
2
Also, since there is enough friction to say that the marble rolls without slipping, we can state that
the displacement on the ramp would equal that of the circumference covered, i.e.
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 Spring '11
 kk
 Kinetic Energy, Special Relativity, Moment Of Inertia, Velocity, rotational kinetic energy

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