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Catapult Explanation

Logan Hymas' catapult explanation.
by

Ivana Tinkle

on 27 April 2010

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Transcript of Catapult Explanation

Double click anywhere & add an idea Levers and Catapults Levers can be found in lots of places. One of these places is my catapult. Levers are consisted of a fulcrum, load, and an effort force. The load that I am using is a bean bag. This is the object that is going to get thrown by the catapult. My fulcrum is the point where the pole meets the two vertical posts. the fulcrum allows the launching pople to pivot and throw the bean bag. The effort is produced by two springs placed on the launching pole that are attached to a block of wood in the back of the catapult so when you pull the launching pole back, the springs strech. When you release the pole, the springs pull back on the pole sending the bean bag into the air. The effort force in my catapult is the springs. When they get pulled back and then let go, force is exerted by them. When they are attached to my catapult's launching pole, they create an effective effort force. CATAPULTS By: Logan Hymas 8-2 Classes of Levers My catapult is a class 3 lever. This is because my effort force is in the middle of my lever. I know that it is a class 3 if it has the effort in the middle because of FLE 123. If f, your fulcrum is in the middle it is a class 1. If l, your load is in the middle it is a class 2. If e, your effort is in the middle then your lever is class 3. Mechanical Advantage The way I can get the mechanical advantage (MA) for my catapult is by using a formula. I have to get the measurments for two things. The load arm, the arm that is holding the load, and the effort arm, the arm that is having the effort on it. Then I simply divide the effort arm by the load arm. The load arm was about three feet and the effort arm was about 10cm making it 0.3 feet. This equals 0.1 making the MA 0.1.
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