Qualification > Sciences
Circular motion question help please
helai.j:
no matter how much i understand and study for it i always get stuck in these nasty Questions ! so please help i wanna know wth am doing wrong
Q1) A circular space station of radius 1000m is designed to rotate about an axis through its center to stimulate gravity. How many revolutions per minute must it perform in order to produce artificial gravity of 9.80-2 ?
Q2) Communication satellites orbit above the equator in orbits of radius4.24x107m with a period of 24 hours. Calculate the angular velocity of communication satellite and the centripetal acceleration that it experiences .
Q3) a ceiling fan is turning at a rate of 100 revolutions per minute A spider is clinging to a blade of the fan. if the spider experiences centripetal acceleration greater than 0.3g . it will lose its grip on the blade and be flung off. how far from the center of the fan can the spider safely go.
S.M.A.T:
--- Quote from: helai.j on October 12, 2010, 06:59:10 pm ---no matter how much i understand and study for it i always get stuck in these nasty Questions ! so please help i wanna know wth am doing wrong
Q1) A circular space station of radius 1000m is designed to rotate about an axis through its center to stimulate gravity. How many revolutions per minute must it perform in order to produce artificial gravity of 9.80-2 ?
Q2) Communication satellites orbit above the equator in orbits of radius4.24x107m with a period of 24 hours. Calculate the angular velocity of communication satellite and the centripetal acceleration that it experiences .
Q3) a ceiling fan is turning at a rate of 100 revolutions per minute A spider is clinging to a blade of the fan. if the spider experiences centripetal acceleration greater than 0.3g . it will lose its grip on the blade and be flung off. how far from the center of the fan can the spider safely go.
--- End quote ---
Don't worry :D there are some wrong answer in the edexcel a2 revision guide ;)
By the way here is your solution
helai.j:
Thanks Alot this is great relief i was doing it right all this time except the first one i didn't know i had to use the 9.80 as acceleration.
i really really appreciate you telling me this thank you a lot .
god bless you
S.M.A.T:
You welcome :D
winnie101:
could u plz explain how got angular velocity, i dont get it
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