Exactly what I was suggesting.Perhaps if you could organise your wires from something like piano wire you may be able to produce a coil spring at one side and a Zed shaped spring at the other oriented so both ends move covering all 3D. However this would then be an impact detector.
Hi Ralph,The ball will accelerate away from his hand because of the energy he applied to the ball and that acceleration is measurable.
OF COURSE!"I just wish I could juggle..."
Just build yourself some balls with leds that light up when they reach the top of the throw, put a couple of these in one hand and one in the other. throw one from the hand with two balls in it then kept throwing from opposite hands when the leds light up ... Easy!
Any negative acceleration detected by an onboard sensor during the climb after the impulse, is due entirely to aerodynamic drag. Similarly with any non-zero readings on descent. Itâ€™s the exact same effect exploited by re-entry vehicles, experiencing deceleration forces of up to 10G due entirely to aerodynamic drag.aerodynamic factors aside
At all times, the accelerometer will sense the acceleration
of gravity. Depending on the orientation, each axis of the
accelerometer will see a range of accelerations from 1g (when
the axis is parallel to gravity) to 0g (when the axis is
perpendicular to gravity). The S-factor is a way to consider the
total acceleration acting on the device at once, acting for all
When the accelerometer is held in any orientation, at least
one of the sensing axes will be parallel with the acceleration
of gravity. Therefore, at least one of the axes will be more than
0g. For example, when the accelerometer is tilted at an angle,
a portion of the acceleration of gravity will be sensed.
Therefore, the S-factor will always be equal to 1 when the
accelerometer is static.
During freefall, all 3 sensing axes converge to 0g. Since the
S-factor is the total acceleration on all axes and all three axes
are zero, the S-factor is 0. The S-factor will only be zero when
freefall is occurring.
When in the car there are external forces acting (acceleration from the engine, engine/hydraulic braking etc). These register but pendulum type activity doesn't. I would equate pendulum type activity to be close to juggling.I have a gizmo which normally lives in my car mounted on the windscreen. It incorporates accelerometers and can be used in two modes - either for Drag racing (which I don't do) or road racing (which I don't really do either but do do some laps on the local track). When driving, it shows acceleration/deceleration and Lateral G's from cornering. It can also be set to record these g forces as well as RPM and time of day. It can therefore be used to analyse and compare different laps, cornering forces etc to improve ones driving and lap times.
If you have it in your hand and rotate it gently on any of its accelerometer axes, the indicators shift about as the g forces change with respect to the calibrated reference orientation - i.e. if it is tilted in relation to its axis then it will register a change.
If it is suspended on a cord so it forms a pendulum and is swung back and forward in the direction of one of its axes, it records no changes even though it is changing direction and accelerating and decelerating through each cycle of the pendulum.
However if you reproduce the equivalent action while holding it in your hand you need to change direction quite rapidly so you feel the mass against your hand resisting the change. Only then is the change of direction registered.