Catapult :: essays research papers

The RatapultObjective My objective in this project was to produce a rat- confine powered catapult. It has a base of 30 cm by 30 cm, and has a theme of cows trying to lead the farm. The reason they want to escape is because they are being killed and turned into steaks, against there will. That is why I developed this ratapult, to save the cows. The cows also wanted me to ask you to eat more chicken.theory and DrawingI hypothesize that if I build the ratapult to a 25-degree angle, and release the hacky sack at a height of .55m thence there will be enough velocity to project the hacky sack exactly four meters. The ratapult will release the hacky sack with an sign velocity of 5.8 m/s, and as a event the hacky sack will travel 4.0 meters in .75 seconds.ProcedureThe first step I took was to paint all of the wood white. After that I put paper on the board that I am going to nail the rat trap to. I then attached the measuring cup to the rat trap by drilling a hole in the middle of the me asuring cup and then using string to attach the cup at some(prenominal) the drilled hole, and the hole at the bottom. Then I nailed the rat trap into the board with wallpaper. That board was then nailed into the base. Then I attached the steps to the draw crate. The steps will hold the base of the ratapult at a 25-degree angle. I attached the steps by drilling holes in the bottom of them and then secure them to the milk crate. Then I nailed the board with wallpaper into the back end of the base. The base was then nailed into the steps, and glued grass decorations and cardboard cows to the base. The ratapult was completed. info & ObservationsI found the initial velocity, or Vi, by finding the horizontal velocity, or Vx, and then using the equation Vx = Vi * cos(angle). The angle was 25 degrees, so I input that into the equation also. That made the equation look like5.3 m/s = Vi * cos(25)I divided both sides by sin(25), then that gave me an initial velocity of 5.8 m/s. Then I decid ed to find the Vertical height of the hacky sack, so I used the equation Vy = Vi * sin(angle). Vy stands for initial vertical velocity.