at the top, mv^2/r=mg
or v= well you solve it.
A rock of a mass 0.2kg is attatched to a 0.75m long string and swung in a vertical plane. What is the slowest speed that the rock can travel and still maintain a circular path.
so, i started with the following equation: Fc= mv2/r
but where do i go from there to solve for v(what can i change Fc to? )
5 answers
3 MI/HR
Oh, so the Centripetal force= mg
how though?
how though?
Oh, 'at the top'
great, thanks for your help :)
great, thanks for your help :)
just to clairify,
you're suffesting that there is no tension when the rock is at the top of the swing?
you're suffesting that there is no tension when the rock is at the top of the swing?
4 answers