1. Jupiter is 600,000,000 km away. It subtends an angle of 50 arcseconds. What t
ID: 2182368 • Letter: 1
Question
1. Jupiter is 600,000,000 km away. It subtends an angle of 50 arcseconds. What then is its diameter? [This is an arc length problem)2. Convert 33 rpm to rads/sec. What is its frequency? Period?
3. Convert 45 rpm to degress/sec.
4. Which is positive angular velocity, clockwise or counterclockwise motion?
5. With coefficient of (static) friction ?=0.2, if a disk is turning at 78 rpm, what is the maximum radius a 5 gm mass can be put before it will fly off? Does the answer depend upon the mass?
6. Would Galileo
Explanation / Answer
a) d=x=50*600,000,000/206265=145443.967711km
b)33x/30rpm= 3.45575rad/s
freq=3.45575/2=0.55Hz
period=1/f=1.82sec
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