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  • A General Materials and Mathematics
    • A1 Basic Materials and Measurement
    • A2 Mathematics
  • B Statics
    • B1 Center of Mass Statics
    • B2 Equilibrium of Forces and Torques
    • B3 Simple Machines
    • B4 Elasticity
  • C Kinematics and Dynamics
    • C1 Center of Mass Motion
    • C2 Kinematics in One and Two Dimensions
    • C3 First Law of Motion
    • C4 Second Law of Motion
    • C5 Third Law of Motion
    • C6 Friction
    • C7 Collisions
    • C8 Mechanical Energy and Power
  • D Rotational Mechanics
    • D1 Rotational Kinematics and Dynamics
    • D2 Moment of Inertia
    • D3 Angular Momentum
    • D4 Gyroscopes
    • D5 Rotational Esoterica
  • E Gravitation and Astronomy
    • E1 Gravitation and Orbits
    • E2 Astronomy
  • F Fluid Mechanics
    • F1 Pressure in Static Fluids
    • F2 Buoyancy
    • F3 Surface Tension
    • F4 Fluid in Motion
    • F5 Forces in Moving Fluids
  • G Vibrations and Mechanical Waves
    • G1 Simple Harmonic Motion
    • G2 Resonance and Coupled Oscillations
    • G3 Mechanical Waves - One Dimensional
    • G4 Mechanical Waves - Two Dimensional
  • H Sound
    • H1 Nature of Sound
    • H2 Wave Properties of Sound
    • H3 Standing Sound Waves
    • H4 Music
    • H5 The Ear
    • H6 The Voice
  • I Thermodynamics
    • I1 Thermal Properties of Matter
    • I2 Transfer of Heat
    • I3 Gases
    • I4 Changes of State
    • I5 Laws of Thermodynamics
    • I6 Kinetic Theory and Statistical Mechanics
    • I7 Solid State and Low Temperature Physics
  • J Electostatics and Magnetostatics
    • J1 Electrostatic Charge and Force
    • J2 Electrostatic Devices and Applications
    • J3 Electric FIelds and Potential
    • J4 Capacitance and Polarization
    • J5 Magnetostatics
    • J6 Electromagnets
    • J7 Magnetic Materials
  • K Electromagnetic Principles
    • K1 Forces on Moving Charges
    • K2 Electromagnetic Induction
    • K3 Transformers
    • K4 Motors and Generators
    • K5 Electrical Properties of Matter
    • K6 Electric Circuits and Instruments
    • K7 RLC Circuits
    • K8 Electromagnetic Waves and Sources
  • L Geometrical Optics
    • L1 Light Sources and Light Rays
    • L2 Plane Mirrors
    • L3 Curved Mirrors
    • L4 Refraction
    • L5 Total Internal Reflection
    • L6 Lenses
    • L7 Optical Instruments
  • M Wave Optics
    • M1 Interference and Diffraction - Slits and Gratings
    • M2 Diffraction - Circular
    • M3 Interferometers
    • M4 Thin Film Interference
    • M5 Interference and Diffraction Esoterica
    • M6 Holograms
    • M7 Linear Polarization and Scattering
    • M8 Optical Activity and Birefringence
    • M9 Circular Polarization
  • N Spectra and Color
    • N1 Continuous Spectra
    • N2 Line Spectra
    • N3 Color
  • O Vision
    • O1 Image Production
    • O2 Visual Latency
    • O3 Color Vision
    • O4 Optical Illusions
  • P Modern Physics
    • P1 Relativity
    • P2 Quantum Mechanics
    • P3 Atoms and Molecules
    • P4 Nuclei and Particles
  • Q Biophysics
    • Q1 Musculoskeletal Systems
    • Q2 Organs
    • Q3 Genetics and Molecular Biology

D1 Rotational Kinematics and Dynamics

These demonstrations provide an introduction to uniform circular motion, and to the forces acting on rotating bodies.

Articles
Image Title
D1-01 STROBOSCOPE AND FAN
Demonstrates rotational motion using stroboscope
D1-11: CYCLOID - LIGHT BULB ON WHEEL
Demonstrate cycloidal motion.
D1-12: ADDITION OF ANGULAR VELOCITIES
Illustrate the complex motion resulting from addition of two angular velocities.
D1-21: ANGULAR VELOCITY - OBERBECK CROSS
Measure the angular velocity of a rotating object.
D1-30: TRAJECTORY FROM CIRCULAR ORBIT - OVERHEAD PROJECTOR
Show that the instantaneous velocity of an object executing uniform circular motion is tangent to the circle.
D1-31: TRAJECTORY FROM SPIRAL
Show that forces are required to create circular motion.
D1-32: TRAJECTORY FROM CIRCULAR ORBIT
Show that the instantaneous velocity of an object executing uniform circular motion is tangent to the circle.
D1-33 ROTATING MASS ON STRING
Illustrates centripetal force and that instantaenous velocity is tangent to the circular path
D1-34 ROTATING MASS ON SPRING
Illustrates centripetal force
D1-35 CENTRIPETAL FORCE - ROTATING MASS
Measures the required centripetal force for an object to move with uniform circular motion
D1-36: AIR TABLE - CENTRIPETAL FORCE
Show that centripetal force varies with angular velocity.
D1-37 MUDSLINGER
Illustrates centripetal force and that instantaenous velocity is tangent to the circular path
D1-39: PENNY AND COAT HANGER
Demonstrate centripetal force and centrifugal reaction in a dramatic way.
D1-40: CENTRIPETAL FORCE ON ROTATING RUBBER BAND
Demonstrate centripetal force and centrifugal reaction.
D1-41 ROTATING WATER BUCKET
Demonstrates centripetal force and centrifugal reaction
D1-42: ROTATING WATER BUCKET WITH SPONGE
Illustrate centripetal force and centrifugal reaction with a trick.
D1-43: INERTIAL FORCES - BALLS IN ROTATING JARS
Demonstrate inertial forces in bodies submerged in air and in water.
D1-44: ACCELEROMETERS AND FRAMES OF REFERENCE
Demonstrate the direction of the acceleration in both rotational and translational coordinate systems
D1-51 BANKED CURVE MODEL
Aid in explaining banked turns
D1-52: FAIRGROUND ROTOR
Illustrate the application of rotational forces
D1-53 LOOP-THE-LOOP
Demonstrates centripetal force and conservation of energy in a rotating object
D1-55: ROTATING ELASTIC RINGS
Demonstrate "centrifugal reaction" and to indicate why the earth is oblate.
D1-61: Rolling versus Sliding
Applies conservation of energy to a rolling object
D1-62: CONSERVATION OF ENERGY IN ROLLING BODY
Demonstrate conversion of gravitational potential energy into translational and rotational kinetic energy.
D1-63: MAXWELL PENDULUM - LARGE
Demonstrate transformations between gravitational potential energy and rotational kinetic energy.
D1-64: MAXWELL PENDULUM - SMALL
Demonstrate transformations between gravitational potential energy and rotational kinetic energy.
D1-65: YO-YO
Illustrate transformation between various forms of energy and to perform yo-yo tricks.
D1-81: TRICYCLE
Illustrate a tricky problem in rotational dynamics.
D1-82: ROLLING FRICTION
Show the direction of the frictional force when a rolling object is accelerated.
D1-83: SPOOL
Illustrate a counterintuitive problem in rotational dynamics.
D1-84: SPINNING CYLINDRICAL SHELL
A counterintuitive demonstration of rotational dynamics.

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