#$&*
course Phy 201
Question on the last two? Please show me how to do those two please.
Car on incline restrained by rubber band chain
You placed a toy car on a ramp, at a variety of different angles, restraining it with a rubber band chain. You observed the angle and the length of a rubber band chain for each trial.
Insert a copy of your data here, along with any previously submitted work you wish to include:
****
Mass of car 20 grams
Trial 1
10.5 cm high
29.5 cm long
19.6 degree angle
Length of rubber band = 13.5 cm
Trial 2
16 cm high
29.5 cm long
29.5 degree angle
Length of rubber band = 14.5 cm
Trial 3
26 cm high
29.5 cm long
41.4 degree angle
Length of rubber band = 15 cm
#$&*
Graph the length of the rubber band chain vs. the sine of the angle of elevation.
****
#$&*
Is it possible to fit the data well with a straight line?
****
Yes
#$&*
Describe any deviations from linearity.
****
I think the friction between the rubberband and the styrofoam could have played a roll in the linearity because the higher the angle rose the less contact was in between the two.
#$&*
Based on your results what would be the rubber band length if the angle reached vertical (i.e., 90 degrees)?
****
18 cm
#$&*
As best you can, based on the information you recorded and your previous results for rubber band chains, what do you think would be the slope of a force vs. length graph for your rubber band chain?
****
?????????????
@&
This will be the slope of that last graph on the preceding lab. Once you have modified your answer to the last question on that lab, you should have this slope.
The question below is a little more difficult, but I think you can get it.
Your graph of rubber band length vs. sine of angle appears to have an average slope somewhere around .4 cm per unit of the sine. You should check your graph and get your own, more accurate value for the slope.
If your graph of force vs. length had a slope of, say, 20 000 dynes / cm, then using this and the previous slope of .4 cm per unit of the sine, what would be the slope of force vs. sine of the angle? Think in terms of the units.
*@
#$&*
What therefore would be the slope of a graph of rubber band force vs. sine of angle?
****
??????????
#$&*
"
@&
&#Please see my notes and, unless my notes indicate that revision is optional, submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end).
Be sure to include the entire document, including my notes.
If my notes indicate that revision is optional, use your own judgement as to whether a revision will benefit you. &#
*@