[quote author=Fu-Kwun Hwang link=topic=1454.msg6832#msg6832 date=1278500749]
If the mass is in circular motion, then the tension .
What if we increase the tension so that .
Will the mass moving inward() or moving outward()?
Thank about it and then check with your equation!
I see I got the sign convention wrong!
I forgot the convention for r unit vector is positive outward.
Will change it to
T1 = m*v*v/r -(cst*cst/(m*r*r*r)-M*g) ;
thanks !!! :)
your masterful questioning allows to think and figure out the answer myself.
Appreciate your superb advise :)
my remixed applet is here