PY211 Demos - Spring 1998

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 - Stone
• section C - TR 2 pm in SCI 107 - Hellman
• section D - TR 5 pm in SCI 107 - Ludwig

Day 1 - 1-13-98 - Intro
Section A and section B

• Meter stick and kg masses
• Vectors on the blackboard 1A40.30

Day 2 - 1-15-98 - Constant acceleration
Section A

• Inclined air track 1C20.30

• Meter stick
• Penny and feather 1C20.10
• Free-fall timer 1C30.10

Day 3 - 1-20-98 - 1D and 2D motion
Section A

• Penny and feather 1C20.10
• Inclined air track 1C20.30
• Howitzer and tunnel 1D60.10

• Simultaneous fall (independence of x and y) 1D60.20 (also includes slow-motion video)
• Howitzer and tunnel 1D60.10

Day 4 - 1-22-98 - 2D and circular motion
Section A

• Simultaneous fall (independence of x and y) 1D60.20 (also includes slow-motion video)
• Howitzer and tunnel 1D60.10 (used for reference frames)
• Monkey and hunter 1D60.30
• Ball on a string 1D50.10
• wheel

• Monkey and hunter 1D60.30
• Spring gun to show max. range at 45 degrees

Day 5 - 1-27-98 - Newton's laws
Section A

• Inertia balls 1F20.10
• Tablecloth trick with a cup of water
• Acceleration block 1G10.25
• Action and reaction with PASCO carts 1H10.17
• Action/reaction with PASCO track on a skateboard

• Ball on a string 1D50.10
• Block tied to a string that breaks when pulled quickly
• Acceleration block 1G10.25
• Action and reaction with PASCO carts 1H10.17
• Action/reaction with PASCO track on a skateboard

Day 6 - 1-29-98 - Newton's laws; Friction
Section A

• A rope to do a tug-of-war
• Action and reaction with PASCO carts 1H10.17
• Action/reaction with PASCO track on a skateboard
• Friction blocks on inclined plane 1K20.10
• Weight dependence of friction 1K20.15
• Static vs. sliding friction 1K20.30

• Ball on a string 1D50.10
• Pail of water 1D50.40
• Tablecloth trick with a cup of water
• Block tied to a string that breaks when pulled quickly
• Mass on a spring scale (elevator model)
• Atwood's machine 1G10.40
• Friction blocks on inclined plane 1K20.10
• Weight dependence of friction 1K20.15
• Static vs. sliding friction 1K20.30

Day 7 - 2-3-98 - Friction; Circular motion
Section A

• Friction blocks on inclined plane 1K20.10
• Weight dependence of friction 1K20.15
• Static vs. sliding friction 1K20.30
• Coffee filters for terminal velocity
• Whirligig conical pendulum 1D50.20
• Pail of water 1D50.40

• Ball on a string 1D50.10

• Friction blocks on inclined plane 1K20.10
• Pail of water 1D50.40
• Whirligig conical pendulum 1D50.20
• Falling off the merry-go-round 1D55.30

Day 8 - 2-5-98 - Circular motion
Sections A and D

• Carnival ride model 1D50.30

Day 9 - 2-10-98 - Midterm

Day 10 - 2-12-98 - Work and energy
Section A

• PASCO cart oscillating with springs

Day 11 - 2-19-98 - Energy and power
Section A

• PASCO cart oscillating with springs
• ball on a string
• Truck with or without a load on an incline (constant power)
• Mass on a spring 3A20.10

Day 12 - 2-26-98 - Potential and kinetic energy
Section A

• Racing balls
• loop-the-loop 1M40.20

Day 13 - 2-28-98 - Center of gravity
Section A

• loop-the-loop 1M40.20
• Meter stick
• Plumb bob method (big pig) 1J10.10

Day 14 - 3-3-98 - Momentum
Sections A and D

• PASCO carts, equal and unequal mass 1N30.32
• Car on a rolling board 1N20.15
• Double ball drop 1N30.60 (A)
• Spring apart PASCO carts 1N20.22
• Newton's cradle (collision balls) 1N30.10
• Happy and sad balls

Day 15 - 3-5-98 - Rotational motion
Section A

• wheel to spin
• Adjustable moment of inertia 1Q10.10
• Inertia wands 1Q10.10

Day 16 - 3-17-98 - Rotational dynamics
Section A

• Adjustable moment of inertia 1Q10.10
• Inertia wands 1Q10.10
• Racing rings, disks, and spheres 1Q10.30

Section B

• Adjustable moment of inertia 1Q10.10
• Racing rings, disks, and spheres 1Q10.30
• Rotating stool with weights 1Q40.10
• Pulling on a whirligig 1Q40.25
• Rotating platform with bicycle wheel 1Q40.30

Section D

• Adjustable moment of inertia 1Q10.10
• Inertia wands 1Q10.10
• Racing rings, disks, and spheres 1Q10.30
• Meter stick to balance
• Acceleration faster than g - pennies on a meter stick
• Torque rod 1J40.21

Day 17 - 3-19-98 - Angular momentum
Sections A and D

• Torque rod 1J40.21
• Rotating stool with weights 1Q40.10
• Rotating platform with bicycle wheel 1Q40.30
• Large yo-yo (walking the spool) 1K10.30
(C and D)

Day 18 - 3-24-98 - Angular momentum; review
Section A

• Rotating platform with two masses
• PASCO cart on an inclined plane
• Collision balls with velcro

• Train on circular track 1Q40.40
• Bicycle-wheel gyro 1Q50.24

Day 19 - 3-26-98 - Test

Day 20 - 3-31-98 - Gravitation

Day 21 - 4-2-98 - Gravitation/Simple harmonic motion
Section A

• Simple pendulum 3A10.10
• 4:1 pendulum 3A10.14
• Torsional pendulum 3A10.30
• Mass on a spring 3A20.10
• PASCO cart between springs 3A20.35
• Mac with transverse wave program

• Simple pendulum 3A10.10
• 4:1 pendulum 3A10.14
• PASCO cart between springs 3A20.35
• Driven PASCO cart 3A60.20
• Circular motion vs. mass on spring 3A40.10

• Balloon with dots to show expanding universe

Day 21 - 4-7-98 - Simple harmonic motion/ damped and driven oscillations
Section A

• Simple pendulum 3A10.10
• 4:1 pendulum 3A10.14
• PASCO cart between springs 3A20.35
• Driven PASCO cart 3A60.20
• Circular motion vs. mass on spring 3A40.10

• PASCO cart between springs 3A20.35
• Driven PASCO cart 3A60.20

• Simple pendulum 3A10.10
• 4:1 pendulum 3A10.14
• PASCO cart between springs 3A20.35
• Driven PASCO cart 3A60.20

Day 22 - 4-9-98 - Oscillations and waves
Section A

• long spring, and a Slinky
• Shive wave model 3B10.30
• Standing waves on a string 3B22.10
• 1 / r-squared dependence using a light bulb

• PASCO cart between springs 3A20.35
• Driven PASCO cart 3A60.20

• Simple pendulum 3A10.10
• 4:1 pendulum 3A10.14
• Barton's pendulum
• PASCO cart between springs 3A20.35
• Tacoma Narrows film 3A60.10

Day 23 - 4-14-98 - Waves; and Fluids
Section A

• Standing waves on a string 3B22.10
• Doppler buzzer 3B40.10
• Mac with the Harmonics program
• Beat tuning forks 3B60.10
• Pascal's vases 2B20.40
• Weight in a boat
• Model of hydraulic lift

• Standing waves on a string 3B22.10
• Doppler buzzer 3B40.10
• Hoot tubes 3D30.70
• Perception of sound (10 dB change) (D only)

Day 24 - 4-16-98 - Fluids
Section A

• Archimedes' tower
• Velocity of efflux 2C10.10
• Venturi tube 2C20.10
• Ball and funnel 2C20.35

• Archimedes' principle

• Archimedes' tower
• Pascal's vases 2B20.40
• Model of hydraulic lift
• U-tube manometer
• Velocity of efflux 2C10.10
• Venturi tube 2C20.10
• Ball and funnel 2C20.35

Day 25 - 4-21-98 - Fluids + Thermodynamics
Section A

• Mechanical equivalent of heat 4B60.10
• Heat capacity - method of mixtures
• piston and hot reservoir
• Constant volume bulb 4E30.10

• Velocity of efflux 2C10.10
• Venturi tube 2C20.10
• Ball and funnel 2C20.35

Day 26 - 4-23-98 - Thermodynamics
Section A

• fire extinguisher
• piston and hot reservoir

• Ball and ring 4A30.20
• Heat capacity - method of mixtures
• piston and hot reservoir

Day 27 - 4-28-98 - Kinetic theory; ideal gas law
Section A

• PASCO molecular motion model 4D30.12
• Model of a diatomic molecule
• Entropy gumballs
• Happy and sad balls
• Stirling engine 4F30.10

• Ball and ring 4A30.20
• Heat capacity - method of mixtures
• piston and hot reservoir

• Balloon in liquid nitrogen 4E10.20
• Constant volume bulb 4E30.10
• Boyle's law syringe
• thermoelectric engine
• piston and hot reservoir

Day 28 - 4-30-98 - Review
Section B

• Balloon in liquid nitrogen 4E10.20
• Constant volume bulb 4E30.10
• Boyle's law syringe
• thermoelectric engine
• piston and hot reservoir