A ball is tied to an elastic string of length 8.0 m and swung in a horizontal circle with a velocity of 0.8 m/s. When a metallic object is tied to a rope of length 2.75 m and swung in a horizontal circle, it makes one revolution in 2.9 s. The ratio of the centripetal force in the string to the centripetal force in the rope is 1/3.0. Find the mass of the metallic object attached to the rope, if the centripetal force in the string is 0.20 N.
Physics - MathMate, Tuesday, September 22, 2009 at 3:57pm
Centripetal force on string, F1
Centripetal force on rope, F2
Since 3F1=F2, therefore F2=0.6N
Since all variables are known except m2,
you can readily solve for m2.
Physics - ngfhg, Sunday, February 12, 2012 at 12:42pm
someone please answer this question
Physics - ngfhg, Sunday, February 12, 2012 at 12:43pm
pllllllllllllllllleeeeeaaassssssse, unless im gonna fail my class
Physics - ngfhg, Sunday, February 12, 2012 at 12:44pm
kidding, but someone answer this freakin question