1. January 31, 2011 Answer in a complete sentence from your notes.
U3b-L7
January 31, 2011
Answer in a complete sentence from your notes.
Name of the simple machine that the mousetrap uses?
When the mousetrap is set, what kind of lever does it use? Explain how?
A released mousetrap, uses what kind of lever?
1. Lever.
2. Second. The load is the arm of the spring that is being pushed
down to compress the spring. The effort force is your
fingers on the end of the snapper arm, and the fulcrum is
the pivot point in the middle of the trap.
3. Third

2. Mousetrap Car Physics Concepts
U3b-L7
Mousetrap Car Physics Concepts
If you are trying to build a long distance traveling or fast vehicle you will need to think carefully about the following concepts: Energy, Power Output, Inertia, rotational inertia, friction, torque, and pulling force.

3. Mousetrap Car Physics Concepts
U3b-L7
Mousetrap Car Physics Concepts
Energy
Energy can be defined as the ability to do work. Work is the applying a force to an object, and actually moving that object. If the object is not moved, no work is done. The goal of the project relies on efficiently transferring the spring’s energy to the car’s wheels. The concepts involved in the transfer of this energy rely on an understanding of simple machines.

4. Mousetrap Car Physics Concepts
U3b-L7
Mousetrap Car Physics Concepts
Energy
The trap acts as a lever to transfer the energy to the axle. The axle acts on the wheel as a second transfer of the energy. Finally, the energy is used to push the wheel against the floor, causing the car to move.

5. Mousetrap Car Physics Concepts
U3b-L7
Mousetrap Car Physics Concepts
Energy
Any friction or resistance in the transfer of energy, leads to a decrease in the efficiency of the machine and decreased performance. Keep the use of simple machines in mind as you design the car, the correct use of these machines will increase your performance.

6. U3b-L6
HOMEWORK
-Finish Brainstorming Detailed Sketches So you may work on your detailed drafted drawing in class. -Complete steps 1-10 of the “Mousetrap car” project. Follow the rubric to ensure a high score. -Remember Mousetrap car due Feb 7

7. U3b-L6
Design Process Review
-By Now You Should Have Completed Some of “Mousetrap car” Project Design Process Steps Let’s Review Step 7.

8. Step 7 – Develop Design Proposal
U3b-L4
Step 7 – Develop Design Proposal
An explanation of your final design
Detailed drafted drawings
Steps to make it
Explanation of how it satisfies all criteria and constraints
Outcome: Sentences, Lists, Charts, Sketches

9. Sample DETAILED DRAFTED DRAWING
DO NOT COPY! You Need A Compass To Draw Circles!
Your Drawing Must Have A Top View Not A Rear View!
Complete Check List Below To Begin Your Own Drafted Drawing
__ Finished Border
__ Finished Brainstorming Detailed Sketches
__ Starting Detailed
Drafted Drawing
Without TALKING
Work On One Of
The Listed Items
Above!
REMEMBER FOCUS NO TALKING OR PTS. LOSS