PY211 Demos - Spring 1999

BU Physics demo room home page

Course schedule:

• section A - TR 8 am in SCI 107 - Butler
• section B - TR 9:30 am in SCI 107 - Redner
• section C - TR 2 pm in SCI 107 - Hellman
• section D - TR 5 pm in SCI 107 - Worstell

Day 1 - 1-12-99 - Intro
Sections A and B

• Three meter sticks, one cubic centimeter, and two 1-kg masses
• Toy bulldozer
• Bicycle-wheel gyro 1Q50.24

Day 2 - 1-14-99 - Constant acceleration
Sections A and B

• Inclined air track 1C20.30
• Equal time / equal distance drop 1C20.20
• Science Workshop experiment: Free-fall picket fence
• Vectors on the blackboard 1A40.30

Day 3 - 1-19-99 - 2-D motion
Sections A and B

• Vectors on the blackboard 1A40.30
• Ball on a string
• Simultaneous fall (independence of x and y) 1D60.20 (also includes slow-motion video)
• Howitzer and tunnel on incline 1D60.15
• Luminous yo-yo tossed back and forth in the dark (B section)

Day 4 - 1-21-99 - Projectile motion
Sections A and B

• Ball on a string
• Howitzer and tunnel on incline 1D60.15
• Monkey and hunter 1D60.30

Day 5 - 1-26-99 - Newton's laws
Sections A, B and D

• Inertia balls 1F20.10 (A only)
• Inertia cylinder 1F20.33
• PASCO track and cart on a skateboard to show the third law
• Atwood's machine 1G10.40 (B and D)

Day 6 - 1-28-99 - Newton's third law; Friction
Sections A and B

• Rope for tug-of-war with a student (A only)
• Acceleration block 1G10.25
• Action-reaction carts 1H10.17
• PASCO track and cart on a skateboard to show the third law
• Pulleys 1M20.10 (B only)
• Static vs. sliding friction 1K20.30
• Weight dependence of friction 1K20.15
• Area dependence of friction 1K20.20
• Friction blocks on incline 1K20.10

Day 7 - 2-2-99 - Friction; Uniform circular motion
Sections A and B

• Static vs. sliding friction 1K20.30 (A only)
• Weight dependence of friction 1K20.15 (A only)
• Area dependence of friction 1K20.20 (A only)
• Friction blocks on incline 1K20.10 (A only)
• Dueling truck and bulldozer
• Truck on an incline (discussing front-wheel drive) (B only)
• Ping pong ball sandwich - small mass pushing ball pushing large mass (B only)
• Newton's sailboat 1H10.20
• Whirligig conical pendulum 1D50.20
• Pail of water 1D50.40

Day 8 - 2-4-99 - Circular motion; review
Sections A and B

• Falling off the merry-go-round 1D55.30
• Carnival ride model 1D50.30
• Acceleration block 1G10.25

Day 9 - 2-9-99 - Test 1

Day 10 - 2-11-99 - Work, energy, and springs
Sections A and B

• Hooke's law spring 1R10.10
• PASCO cart oscillating with springs
• Mass on a spring 3A20.10
• Lever - long plank to lift professor (B)

Day 11 - 2-18-99 - Work, energy, and springs
Sections A and B

• Hooke's law spring 1R10.10
• PASCO cart oscillating with springs
• Mass on a spring 3A20.10
• ball on a string
• Truck with or without a load on an incline (constant power)
• Pulleys 1M20.10 (B only)

Day 12 - 2-23-99 - Potential energy
Sections A and B

• Racing balls
• Truck with or without a load on an incline (constant power) (B only)
• Pile driver with soda cans 1M10.25
• Darda car and loop-the-loop Darda track

Day 13 - 2-25-99 - Conservation of energy
Sections A and B

• Potential energy well 1M40.25
• Stopped pendulum 1M40.15
• loop-the-loop 1M40.20

Day 14 - 3-2-99 - Momentum
Sections A and B

• Happy and sad balls
• Car on a rolling board 1N20.15
• Baseball on basketball 1N30.60
• Astroblaster 1N30.60
• Car crashes 1N10.35 (B only)
• PASCO carts 1N30.32
• Ballistic pendulum 1M40.40

Day 15 - 3-4-99 - Collisions; Rotation
Sections A and B

• Plumb bob method (big pig) 1J10.10
• Meter stick on fingers 1J10.30
• wheel to spin

Day 16 - 3-16-99 - Rotational dynamics
Sections A and B

• Adjustable moment of inertia 1Q10.10
• Weighted wheel - CENCO wheel with 10 g mass
• Inertia wands 1Q10.10
• Racing rings, disks, and spheres 1Q10.30 (B)

• Meter stick on fingers 1J10.30
• Meter stick with 3 lights 1D40.10
• wheel

Day 17 - 3-18-99 - Rotational KE and angular momentum
Sections A and B

• Racing rings, disks, and spheres 1Q10.30 (A)
• Rotating platform with weights 1Q40.10
• Rotating platform with bicycle wheel 1Q40.30
• MITAC gyro 1Q50.30
• Cycloid with flashlight on wheel (B)

• Racing rings, disks, and spheres 1Q10.30 (A)
• wheel

Day 18 - 3-18-99 - Rotational KE and angular momentum
Sections A and B

• Racing rings, disks, and spheres 1Q10.30 (A)
• Rotating platform with weights 1Q40.10
• Rotating platform with bicycle wheel 1Q40.30
• MITAC gyro 1Q50.30
• Cycloid with flashlight on wheel (B)

Day 19 - 3-23-99 - Angular momentum ; Gravitation
Section B

• Passing the wheel 1Q30.10
• Pulling on the whirligig 1Q40.25

Day 20 - 3-25-99 - Gravitation ; Review
Section B

• Mac running the Gravitation simulation

Day 21 - 3-30-99 - Test

Day 22 - 4-1-99 - Simple harmonic motion
Section A

• Mass on a spring 3A20.10 (B also)
• PASCO cart between springs 3A20.35
• Circular motion vs. mass on a spring 3A40.10
• Simple pendula 3A10.10

Day 23 - 4-6-99 - Damped and driven harmonic motion; waves
Sections A and B

• Circular motion vs. mass on spring 3A40.10
• Driven PASCO cart 3A60.20
• long spring
• longitudinal wave demonstrator

Day 24 - 4-8-99 - Waves and sound
Sections A and B

• 1 / r-squared dependence using a light bulb
• longitudinal wave demonstrator
• range of human hearing
• Doppler buzzer 3B40.10

Day 25 - 4-13-99 - Interference of waves; music
Sections A and B

• Shive wave model 3B10.30 showing reflection
• Ripple tank - double source 3B50.20(B only)
• Standing waves on a string 3B22.10
• Mac with the Harmonics program
• Beat tuning forks 3B60.10
• Moire pattern transparencies 3B50.40
• Bloogles
• Organ pipes 3D32.10

Day 26 - 4-15-99 - Fluid statics
Sections A and B

• Crush the can with vacuum pump 2B30.25 (B only)
• Magdeburg hemispheres 2B30.30 (B only)
• Pascal's vases 2B20.40
• U-tube manometer
• Weight in a boat
• Model of hydraulic lift
• Archimedes' tower
• beaker of water on a balance

Day 27 - 4-20-99 - Fluid dynamics
Sections A and B

• Velocity of efflux 2C10.10
• Venturi tube 2C20.10
• Ball and funnel 2C20.35
• styrofoam balls to throw
• PASCO cart with Bernoulli attachment

Day 28 - 4-22-99 - Temperature; Ideal gases
Sections A and B

• Bimetallic strip 4A30.10
• Ball and ring 4A30.21
• Break the bolt 4A30.30
• Jumping disk
• Constant volume bulb 4E30.10
• Boyle's law syringe
• Specific heat - mix hot lead ball and cool water

Day 29 - 4-27-99 - Heat transfer
Sections A and B

• Dropping lead shot (mechanical equiv. of heat) 4B60.10
• Rheoscopic fluid 4B20.77
• Conduction with liquid crystals 4B30.53
• Leslie cube 4B40.30
• Two-can radiation 4B40.40
• fire extinguisher

Day 30 - 4-29-99 - Thermodynamics
Sections A and B

• PASCO molecular motion model 4D30.12
• Model of a diatomic molecule
• Brownian motion model 4D10.20