Candles rotating about an axis.

1D52.40 • A+0+50

Centrifugal and Centripetal Acceleration. Lighted Candles Rotated about an Axis. (The Aberrant Candle Flame.) The candle flames are observed to point inward, toward the axis of rotation. Inside the glass shield, centripetal acceleration pushes the air outwards; the less dense flame points inwards. (It is best observed in a dark room. Focus on one spot as the candles move by.)

Related Demos

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1D52.10 Flattening of the earth: Rotating brass hoops. 1D52.35 Mercury and colored water in a rotating glass vessel.

A+0+0 "Coin and Feather" fall in an evacuated rotatable tube. A+0+5 Timed free fall: Ball drops 2 meters through electronic timing gate. A+0+10 Atwood machine: Unbalanced weights on a pulley accelerate slowly. A+0+15 A falling weight accelerates a car horizontally. A+0+20 Acceleration of a steel ball down an inclined plane with metronome. A+0+22 Inclined airtrack with gliders and timing gates. A+0+23 Inclined airtrack: Cart and ball accelerate in unison. A+0+25 Cork float accelerometer: Cork and water in sealed flask. A+0+30 A chain dropped onto a force plate. A+0+31 Swinging mass M lifts mass 2M A+0+35 A ball swung on a string held by a sleeve. A+0+40 Conical pendulum: Similar to A+0+35 with standard weights. A+0+41 Mass on scale is accelerated A+0+45 Loop the loop: Sphere, hoop, disk rolled down a looped track. A+0+47 Swing water in a bucket. A+0+52 Banked turns: slot car around an oval track A+0+55 Mercury and colored water in a rotating glass vessel. A+0+56 Flattening of the earth: Rotating brass hoops. A+0+57 Rotating loop of chain rolls across bench. A+0+58 Mechanical governor device. A+0+59 Chain lariat with hand drill or electric rotator. A+0+60 Film: "Zero G", sound, 14 min. A+0+65 Film: "Conservation laws in zero G", sound, 14 min. A+0+70 Film loop: "Inertial forces: Centripetal acceleration", 3:15 min. A+0+75 Film loop: "Inertial forces:Translational acceleration", 2:05 min. A+0+80 Java Applet: The Ramp A+0+81 Java Applet "Moving ladybug shows vectors of motion" A+0+82 Java Applet "Ladybug on Carousel shows vectors of motion" A+0+83 Java Applet "Moving dot shows vectors of velocity and acceleration" A+0+84 Java Applet "The Moving Man" A+0+85 Java Applet "Moving car with graphed position to show linear sinusoidal motion" A+0+86 Film Loop: "Worlds largest vacuumn chamber does coin and feather, 4:41 min" A+0+90 Falling Slinky's bottom stationary until top reaches it