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AvrGang
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Homework Statement
A 5.0-m-diameter merry-go-round is initially turning with a 4.0 s period. It slows down and stops in 20 s.
a. Before slowing, what is the speed of a child on the rim?
b. How many revoluotions does the merry-go-round make as it stops?
( Can i know what is a merry-go-round)
Homework Equations
The Attempt at a Solution
I solved a) like that:
V= 2(Pi)r/T
V= 2(pi)(2.5)/4
V= 3.93 m/s
b) I think this is the correct equation:
([tex]\theta[/tex])f = [tex]\theta[/tex]o + [tex]\omega[/tex]o t + a/2r ( t^2)
but i can't find [tex]\omega[/tex]o or a