Trebuchet Project
The time period/place that we chose to base our trebuchet off of is 12th century England. We represented this by desiginging it similar to a common trebuchet design from back then. We also put little knights. We put King Richard who was one of the kings in that time period.
The skill that I feel that I excelled in the most in this project was collaboration. I think this because our group worked really well together. We didn't have any issues and we all did our share of work. The skill that I think I could work on more is critical thinking. In a couple of instances I didn't think things through very well and that resulted is a couple mistakes. If I had thought of what I was doing and payed more attention the mistakes most likely would'nt have happened.
The skill that I feel that I excelled in the most in this project was collaboration. I think this because our group worked really well together. We didn't have any issues and we all did our share of work. The skill that I think I could work on more is critical thinking. In a couple of instances I didn't think things through very well and that resulted is a couple mistakes. If I had thought of what I was doing and payed more attention the mistakes most likely would'nt have happened.
Reflection
Three machines that that our rube demonstrated were a pulley that pulled a string to let a ball go. There was an inclined plane that three marbles rolled down and then switched directions to another inclined plane. There was a toy car with wheels that were rolled when a marble hit the back of it. One physics principal that was shown in our rube was potential energy. This was shown by us taking one newtons cradle ball and suspending it having it get released and activate the newton's cradle. Speed was also used by us having marbles rolling down a slope and gaining enough speed to hit and release a swinging arm. We also used kinetic energy with the newtons cradle by having it travel through all the balls and hit another one sending it down a hill.
Theoretically you drop a 7 gram (.007 kg) steel ball 50 into a bucket with a pulley. To calculate the potential energy you multiply the mass (.007) times gravity (9.81m/s2 ) times the height (.5 mt). The potential energy is .034334 Joules. When the ball lands the velocity is .45 m/ps2 multiplied by the mass .(007) times .5. The kinetic energy is .00070875 Joules.
The design process we used for our rube was we all got together and brainstormed two ideas each for steps. After that we started building and refining them as we went. As we kept going we realized some didn’t work and we replaced them with different ones. Before we did the main rubes we did small three step ones and we used some of the steps off of those. The 21st century skill I think I excelled in the most was creativity because when we had had problems I was good at fixing them. Right before the exhibition when we couldn't get things to stay in place I used things around to fix it. I think that the skill I grew the most in was communication because some of the time I would just sit there and wait for someone to tell me what to do instead of asking what I could do. I learned that if I am going to do my best work I need to communicate with my teachers and peers.
Theoretically you drop a 7 gram (.007 kg) steel ball 50 into a bucket with a pulley. To calculate the potential energy you multiply the mass (.007) times gravity (9.81m/s2 ) times the height (.5 mt). The potential energy is .034334 Joules. When the ball lands the velocity is .45 m/ps2 multiplied by the mass .(007) times .5. The kinetic energy is .00070875 Joules.
The design process we used for our rube was we all got together and brainstormed two ideas each for steps. After that we started building and refining them as we went. As we kept going we realized some didn’t work and we replaced them with different ones. Before we did the main rubes we did small three step ones and we used some of the steps off of those. The 21st century skill I think I excelled in the most was creativity because when we had had problems I was good at fixing them. Right before the exhibition when we couldn't get things to stay in place I used things around to fix it. I think that the skill I grew the most in was communication because some of the time I would just sit there and wait for someone to tell me what to do instead of asking what I could do. I learned that if I am going to do my best work I need to communicate with my teachers and peers.