Physics is the study of how energy interacts with matter.
Links by Unit Topics
Safety in the Physics Lab
See Ms. Skinner for Safety Contract
Physics Math Review
Physics Reference Tables
Accuracy versus Precision
Newton's Laws of Motion
One-Dimensional Motion (Mechanics)
Force Type Determination
Force of Friction
Forces of Stress and Strain
Kinetic Energy, Work, and Power
Ohm's Law and Electric Circuits
Magnetic Field Strength and Force
First Quarter Egg Drop Project Force
Objective: Design a container that will protect the egg from the force of
impact during free fall.
1. Egg must be raw, white, large, untreated (no paint, glue, etc.).
2. Container cannot be larger than 25cm in any direction; mass maximum is
200 g. Mass should be as low as possible without sacrificing protection
of the egg. Remember: a project that is too massive is detrimental; a
project without protective materials will not prevent the egg from the
impact due to force.
3. No materials can be to suspend the egg within the container.
4. No parachutes or fins may be attached to the container.
Second Quarter Mobile Project Work
Objective: Design and construct a mobile so that all arms are balanced in
the horizontal component.
1. The mobile should have a minimum of three freely swinging arms as well as
a general theme to enhance design merit. The three arms must be
independent of each other, not crisscrossing. The design of the mobile
should allow for full 180-degree turns of each arm without collisions.
2. The arms cannot be centered off one string. It is recommended that the
top arm's supporting string be centered.
3. Plan to use 3/16-in to 1/2-in wooden dowels as arms. The diameter of the
dowels is dependent on the weight of the objects. General Rule: the
lighter the objects, the more narrow the diameter of the dowel.
However, the dowel cannot bow under the weight of the objects, nor can a
dowel have such a large diameter that the objects have no affect on the
dowel arm swinging.
4. Select a minimum of nine hanging items for the mobile, using at least
three per arm.
5. a. Sketch the general plan of the mobile on graph paper, using an
appropriate scale. The sketch should provide an idea of how the
mobile will look.
b. Show the approximate length of each arm on the sketch, using the
squares on the graph paper.
c. Make a legend on the sketch that details all parts of the drawing
(arms, objects, masses, lengths, etc.).
6. Find the mass of each item, as well as the mass of each painted and cut
dowel. Record all measurements in the legend.
7. Calculate the position of the support string on each arm as well as that
of the items.(Force x distance = Force x distance) Record measurements
in the legend. Note: You will achieve the best results by starting with
the lowest arm and working upward. Make a notch in the dowel for each
string so that the object will not slip.
8. Allow plenty of time for the project as it will take longer than you
9. Make a list of five tips for next year's students.
10.Submit your sketch and all other written information in a three-prong
folder with a title page.
Bring all your supplies and arms in a box so your project will not get
lost or damaged.
Assessment: Finished Mobile 30%; Guideline Adherence 35%; Sketch with
Legend 25%; Creativity 5%; Quality 5%; Bonus Best of Show 5%.
Creativity Strive for interest in your design. Think of its visual
impact. Vary the heights of dowels by balancing smaller
objects with larger ones. Paint the dowels for effect.
Quality This includes equilibrium of the arms, durability, neatness of
construction, attention to design details, etc.
Third Quarter Project Domino Project Energy & Simple Machines
Fourth Quarter Project Electrified House Ohm's Law & Electric Circuits