Katie

Bizarro:

FBD of car at top position



FBD of car on the way down the first hill FBD of car at the bottom of the first hill

FBD of mass on a string on the way up

FBD of mass on the way down

FBD of mass at the bottom of the first hill

Sketch of top and side views Side View:

Top View:

Picture ([])

Video: Bizarro Roller Coaster


 * Calculations:**
 * We had to use data from another group because ours was significantly off. Had we used our data, our percent error would have been around 760%, which is absolutely awful.

Speed at the bottom of the hill

Acceleration Going Down the Hill

Power Needed (to get up the hill)


 * Theoretical Calculations:**

Speed at the Bottom of the Hill

Acceleration Down the Hill

Power Needed (to get up the hill)


 * Analysis: Percent Error**

Speed

Acceleration

Power

Safety: Analysis of g's of acceleration:

Our percent errors for these calculations were originally extremely high when using our own data. This is a problem, and suggests that we did something wrong when collecting our data. This could be due to error in measurements, such as timing or the distances. To fix this, we would need to remeasure these and then redo the problems, which would hopefully lead to better results. These could have been a result of human error. It is difficult to measure the lengths of the rollercoasters. In addition, we may have measured a smaller length than was actually required, which could be part of what contributed to our horrible percent error. The time was also subject to error. This could be to human error, as well as the fact that we may have been distracted while timing. It was difficult to pay attention to the timer while on the ride, which could lead to bad results. However, after using data collected by another group doing the same ride, our results turned out to be much better. After using this data, all the percent errors were under 20% which means the measurements were fairly accurate.The sources of error for this are the same as listed above.

d vs. t

v vs.t

A vs t

Thrill vs. Acceleration

What safety features were in place? Describe the weight sensations on the way up, down, and at the bottom of the first hill. Describe the excitement level. Thrill Factors Evaluation Were the #g's within safe limits? Was there a correlation between #g's and excitement level? Explain, providing evidence.
 * Safety:**
 * There was a break system, which slowed us down. In addition, there was a long with a locking bar system with seat belts to hold riders in.
 * On the way up: riders feel heavy, and they are leaning back
 * On the way down: riders feel much lighter, and they can feel the air pressure pressing on face
 * At the bottom of the first hill: riders feel heavier at this point
 * On the way up: it was kind of boring, and riders were waiting for something more exciting to happen
 * On the way down: it was really fun, riders felt weightless, and the feeling was exhilarating
 * At the bottom of the first hill: riders felt a lot of pressure, and because of this, they felt heavy
 * The thrill can be attributed to the rush of wind on riders' faces. In addition, it can also be due to the fact that riders were upside down for a decent amount of time and there were frequent changes in vertical as well as horizontal position. There was a heavy feeling during flips which made the ride more exciting.
 * Yes, this is because a human can only withstand up to 4g's when going down a hill. On this roller coaster the amount of g's is .34, which is much less than 4, and therefore does not have a severe effect on riders. Due to this we are able to say that the number of g's is within safe limits and that humans are able to ride this ride without getting hurt.
 * Yes there was. This can be clearly seen in the thrill vs acceleration graph above, which demonstrates that as the level of g's increase so does thrill and excitement.

Thinking about the Physics: 1.Explain the behavior of the mass on the string. Did the FBD of the car correlate to that of the mass? Why or why not? 2. Did the #g's correlate to the sensation of weight? 3. Discuss the graphs you created and way they curve the way that they do.
 * Yes, it behaved like an aplomb. It was behaving as expected to. The car and mass were both traveling at the same speed and undergoing the same motion, so it makes sense that the FBD of the car correlates to that of the mass.
 * Yes, an increase in the g's correlates to an increase in apparent weight, which leads the rider to feel heavier.
 * Distance vs Time
 * Distance is covered a a slower pace because of the slow initial velocity. Distance is covered very slowly because velocity is zero at the top of the hill. The coaster begins to cover more distance as velocity increases going down the hill.
 * Velocity vs Time
 * Velocity is constant as the coaster travels up the hill, but due to acceleration while going down, the velocity increases.
 * Acceleration vs Time
 * There's no acceleration as the coaster travels up the hill because it is moving with a constant velocity, but as it goes down the hill, the acceleration increases.
 * Thrill vs Acceleration
 * The thrill increases as the coaster nears the top of the hill, and then even more so as the acceleration increases down the hill.