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Exploring Simple Machines: Creating a Robot Arm and Suspension Bridge

In our project, we designed and built two distinct simple machines: a Robot Arm capable of picking up water bottles and a Suspension Bridge that shifts to allow ships to pass through. Using materials like popsicle sticks, syringes, and rubber bands, we employed various mechanisms to power our designs. While we encountered limitations—such as the inability to grasp small items with the Robot Arm and instability in the bridge's joints—we identified possible improvements like refining joint placements for smoother movement and enhancing visual appeal through better finishes.

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Exploring Simple Machines: Creating a Robot Arm and Suspension Bridge

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Presentation Transcript

  1. Science: Reflection on Making simple machines By: OkkarHtin, Rose, Shwe Hmon, Hnin Ei (8A)

  2. Purpose • We worked on two different projects and made two different machines. • #1: Robot Arm-Can pick up water bottles • #2: Suspension Bridge- Represents shifting of bridge to allow ships to pass through

  3. Design & Mechanisms Involved (#1) • Materials used: Popsicle sticks, syringes, pipe, water, wires, duct tape, rubber bands, fasteners, glue, cardboard • 3 different syringes powering 3 different movable joints

  4. Design & Mechanisms Involved (#2) • Materials used: Popsicle sticks, rubber bands, syringes, pipe, glue • Pressure of syringe being pulled back travels through pipe and pulls mobile part of bridge up

  5. Faults & Limitations • #1: Cannot grasp minuscule items nor items of a certain shape due to original design of exclusively carrying water bottles • #2: Unstable engineering at the vital joints of the bridge, may not move when demanded

  6. Possible Improvements • More visually appealing (generous but subtle use of glue, clean-cut joints and components) • Refined placement of joints and mechanisms (resulting in easier movement of joints)

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