ENERGY AND MOTION
PHYSICS IS PHUN - March 2009
SPlease be Seated
SDemonstrations in Acoustics announcement
SComment: Question of the Week web site
SSign up for Physics is Phun listserv
STitle Slide "ENERGY AND MOTION" - Welcome and Thanks
STopics: Center of Mass, Forces, Kinematics, Newton’s Laws of Motion, Energy
CENTER OF MASS
SCM Properties
DB1-09 CENTER OF MASS - TRIANGLE
DB1-01 CENTER OF MASS - DISC SECTION
DB1-06 DOUBLE CONE - LARGE
DB1-15 TOPPLING CYLINDERS
CENTER OF MASS MOTION
DC7-17 SUPERBALL (throw it in a parabolic arc)
DB1-05: CENTER OF MASS - PLUMBER'S HELPER
DC1-02 CENTER OF MASS MOTION - PLUMBER'S HELPER
CENTER OF PERCUSSION
SCenter of Percussion
DD2-21 CENTER OF PERCUSSION - BAT AND MALLET
Comment on result: baseball, tennis
DKINEMATICS
SKinematics and Dynamics
DC2-21 BALLS DROPPED AND SHOT
DC2-22 MONKEY AND HUNTER
(page 2)
SNewton’s Laws of Motion
NEWTON’S FIRST LAW OF MOTION
SStatement
SINERTIA - AT REST
DC3-02 INERTIA - TABLE CLOTH TRICK
DC3-04 INERTIA - LEAD BRICK AND HAND (dry ice in water trick)
2SBig George cartoon
SINERTIA – IN MOTION
Comments: not obvious historically
DC3-11 STRAW AND POTATO
DC3-12 PENCIL AND PLYWOOD
SBig Bertha cartoon
SQuestion:
DC3-03 INERTIA - MASSES HANGING IN SERIES
FORCES
SForce and Impulse
Comment: Effect of impulse on Table Cloth Demonstration
Examples:
DC2-25 FUNNEL CART
DC2-26 FUNNEL CART WITH MASS OVER PULLEY
DB4-33 EGG CRUSHER (with phony lead brick)
DIMPULSE - EGG AND SHEET
(page 3)
NEWTON’S SECOND LAW OF MOTION
SLeaning Tower of Pisa
SStatement
DC4-34 GALILEO'S EXPERIMENT - MASSES IN FREE FALL
DC4-33 FREE FALL IN VACUUM - FEATHER AND BALL
NEWTON’S THIRD LAW OF MOTION
SStatement
Comment on Archaic term "action"
SWatch out for Reaction – Reaction very important (mechanical engineering)
SBLANK
DA1-51 SKATEBOARD
DC5-12 BALLISTIC CANNON CARTS
SFire Boat
ROCKETRY
SRocketry
DC5-15 REACTION FORCE ON AIR BLOWER
DC5-13 WATER ROCKET
DC5-14 ROCKET TRIKE
SBelly Button Slip Knots (The Ultimate Action-Reaction Experiment)
SQuestion:
DC5-18 FAN CART
SGesundheit
2SBig George - Internal Force
ENERGY
SBC on Hill Track
DC8-04 HILL TRACK
SBC snowman cartoon
SGiant Pendulum
DC8-01 GIANT PENDULUM
SWrecking ball cartoon
SSunset animated gif
PRE-SHOW DEMONSTRATIONS
B1-04 CENTER OF MASS - BRASS BARBELL
B1-14 CENTER OF MASS - BOTTLE
B1-13 CENTER OF MASS - FORK AND SPOON ON TOOTHPICK
B1-07 DOUBLE CONE - SMALL
B1-11 BALANCE MAN
B1-02 CENTER OF MASS - LEANINGTOWER
B1-12 CENTER OF MASS - HINGED STICK PARADOX
B1-17 CENTER OF MASS - STICKS
C2-21 BALLS DROPPED AND SHOT
C2-22 MONKEY AND HUNTER
C2-28 TRAJECTORY OF BALL DROPPED BY WALKER
D1-31: TRAJECTORY FROM SPIRAL
C6-12 SKIDDING AUTOMOBILE
C6-14 SOCIAL CLIMBER
C7-04 AIR TRACK - COLLISION VELOCITY MULTIPLIER
C7-15 COLLISIONS OF BALLS - 3 TO 1 MASS RATIO
C7-11 COLLISIONS OF BALLS - EQUAL MASSES
C7-12 COLLISIONS OF BALLS - ONE LIGHTER MASS
B2-16ROPE WITH STUDENTS
("strong" students pull on each end, "weak" student deflects rope)
C2-51 KINEMATICS WITH ULI AND ULTRASONIC RANGER