SIMPLE MACHINE

WHAT IM DOING

• Im building a first class lever
• a catapult that can use the law of moments
• the law of moments will be able to lanch a rock in the catapult

1ST CLASS LEVERS

• 1st class levers have they're fulcrum in the middle
• they also have two moment arms to both sides
• one of the moment arms is the effort arm
• the other moment arm is the ressistance arm

EXAMPLES OF 1ST CLASS LEVERS

• some examples of first class levers are as following
• catapult (what i will be building)
• see-saw
• crowbar
• scissiors

WHAT IM GOING TO BE BUILDING

• im going to be building a minature catapult
• this catapult will only use nessesary materials
• easy to find materials and it works great

MATERIALS I USED

• here is a list of materials i will be using
• lots of popsicles
• a bottlecap
• lot of rubberbands
• and superglue

STEPS TO BULDING THE MACHINE

STEP 1

• take six popsicle sticks in a stack
• tie them together with rubberbands
• make sure they are all together in order

2ND STEP

• put a popsicle stick n the middle of the stack
• tie it down and make a fulcrum
• test it out to see if it works

3RD STEP

• use popsicle sticks and stick em back on both sides of the stack
• glue both of the popsicle sticks down.
• then put a popsicle stick on the back of those to setup the base
• wait untill all of the glue is dried

4TH STEP

• glue down the bottlecap onto the main popsicle stick
• then get a small piece of the popsicle stick and glue it on the back in the middle
• take a rubberband and hook it onto the back and pull it under the catapult
• then glue it on the lever part of the catapult
• put in ammo and fire!!!!