IYPT 2019 Problems – IYPT.org | hurricane balls iypt
Pleaserefertothe officialandsignedpdf[1]astheauthoritativesource.1.InventYourselfBuildasimplemotorwhosepropulsionisbasedoncoronadischarge.Investigatehowtherotor’smotiondependsonrelevantparametersandoptimizeyourdesignformaximumspeedatafixedinputvoltage.2.AerosolWhenwaterflowsthroughasmallaperture,anaerosolmaybeformed.Investigatetheparametersthatdeterminewhetheranaerosolisformedratherthanajetforexample.Whatarethepropertiesoftheaerosol?3.UndertoneSoundAllowatuningforkoranothersimpleoscillatorto...
Please refer to the official and signed pdf[1] as the authoritative source.
1. Invent Yourself
Build a simple motor whose propulsion is based on corona discharge. Investigate how the rotor’s motion depends on relevant parameters and optimize your design for maximum speed at a fixed input voltage.
2. AerosolWhen water flows through a small aperture, an aerosol may be formed. Investigate the parameters that determine whether an aerosol is formed rather than a jet for example. What are the properties of the aerosol?
3. Undertone SoundAllow a tuning fork or another simple oscillator to vibrate against a sheet of paper with a weak contact between them. The frequency of the resulting sound can have a lower frequency than the tuning fork’s fundamental frequency. Investigate this phenomenon.
4. Funnel and BallA light ball (e.g. ping-pong ball) can be picked up with a funnel by blowing air through it. Explain the phenomenon and investigate the rel...