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Kajayacht
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Homework Statement
A boy whirls a ball on a string in a horizontal circle of radius 1.0 m. How many revolutions per minute must the ball make if its acceleration towards the center of the circle is to have the same magnitude as the acceleration due to gravity?
Homework Equations
a=v^2/R
V={omega}R
{omega}=2pi*f
The Attempt at a Solution
9.8/1= v^2
v= 3.13
{omega}=v/R=3.13
f=3.13/2pi
f= 4.92