Lecture Demonstrations Laboratory

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PHYS 2010: Principles of Physics I

• Ball Collection
  (Just a pingpong ball and basket ball will do - just dropping them at the same time to show that they drop exactly the same way)

• basketball

•  video  - Ballistics Cart

• basketball

•  video  - Ballistics Cart

• 1) Air track and a cart, just to show "frictionless"ness. 2) Two toilet paper rolls (one full, the other nearly empty) set through horizontal bars

  next to them a chair on which I sit and pull the rolls (to show the inertial difference between the two rolls)

• Hit the Nail on the Head
  (I may need your assistance to perform the hitting )
•  video  - Inclined Plane
  (No need of the balance; just the inclined plane and the cart (to show that cart accelerates) )

• Whirligig
  (just a ball with string attached (simply spinning it to demonstrate uniform circular motion) )
•  video  - The Atwood Machine
  (No need of timer; just pulley and weights)
•  photos  - Knot in Static Equilibrium
• Hooke's Law

•  video  - Spinning Tray
  (It would be nice with a real wine glass - not a plastic cup )
• Weight Dependence of Friction
• Coefficient of Friction

• Centripetal Acceleration

• Potential Energy
•  video  - Conservative System
  (With the "door board" propping against the classroom bench)
•  video  - Pendulum with Moveable Peg

• center of mass styrofoam with lights

• Reaction Cars
  (no timing devices necessary)

• 1. center of mass styrofoam with lights

  2. bicycle wheel, portable version so I can easily roll it on the table

  3. Overhead projector to use my transparency slides - also a few colored erasable pens for them

• Rotational Inertia Rods
  (with a scale to show that the weights of the two bars are equal)

• No Class!

• bicycle wheel on a stand, so I can apply torque on the wheel with my hand

•  video  - Center of Mass of Virginia
•  video  - Moment of Inertia Wheel
•  video  - Vector Nature of Angular Momentum
  (with motor to spin the wheel)

• No demo (gravity chapter)

• 1. Vertically set spring with varying weights (e.g 1kg and 250g) to show the period variation (ideally two identical springs to show the period variation at the same time) 2. Simple pendulums with different lengths to show that the period varies 3. CM Virginia as a physical pendulum

• 1. spring waves across the classroom showing the wave speed change depending on the amount of pull 2. sound speed measuring tube/piston with a tuning fork w/ speaker output and a meter stick to measure the wavelength of the standing wave 3. helix coil with putty and crank on overhead projector

• Bell in a Vacuum
  (may not get to it, so leave it out)
•  video  - Tuning Fork Beats
•  video  - Air Driven Organ Pipe

• Floating/sinking identical-looking balls in a bottle of water

• Hydraulic Press
• Magdeburg Hemispheres
  (May need your assistance as a pulling partner)
•  video  - Archimedes' Principle I
• Archimedes Principle III
  (Just Helium balloon and a jar, I don't need the trash bag demo)

• Absolute Zero
  (LN2 - Ice Water - Room Temp Water - Boiling Water - No need of dry ice)
•  video  - Thermal Expansion
  (ball & ring, bi-metal strip and bunsen burner)
• LN2 - Thermal Effects on Solids and Gases
  (just balloons and LN2)
•  video  - Heat Conduction
  (stainless steel tube with torch)

• Boiling Water in a Paper Cup
  (one cup with water, another cup without)
•  video  - Boiling by Cooling

• No demos!

• No Class!