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23 Nov 2019
Dustdevils on Mars are like tornados on Earth, except thatMarsâatmosphere has a density only 1% that of Earthâs(ÏAIR =1.2 kg/m3 at the Earth surface). Consider thata Martian lander hasa wind exposed surface area of 1 m2. If thewind speed of a dustdevil is 200 mph (89.4 m/s) and assuming thatthe wind elasticallybounces off the lander, calculate the force ofthe wind on thelander. The value you get should provide anexplanation why a dustdevil passed over one of the rovers and theonly effect it had wasto clean off the solar panels. Hint:consider the mass of theatmosphere that hits the rover in time?t.
Dustdevils on Mars are like tornados on Earth, except thatMarsâatmosphere has a density only 1% that of Earthâs(ÏAIR =1.2 kg/m3 at the Earth surface). Consider thata Martian lander hasa wind exposed surface area of 1 m2. If thewind speed of a dustdevil is 200 mph (89.4 m/s) and assuming thatthe wind elasticallybounces off the lander, calculate the force ofthe wind on thelander. The value you get should provide anexplanation why a dustdevil passed over one of the rovers and theonly effect it had wasto clean off the solar panels. Hint:consider the mass of theatmosphere that hits the rover in time?t.
