College Physics
posted by Anonymous on .
An 0.10 kg object is hanging from your rearview mirror. While you are accelerating 4.0 m/s2 the string makes an angle with the vertical. There is a weight force going down and tension force along the string. What is the tension force and the angle?

Let the tension force be T and the angle be A. Vertical and horizontal force balance equations tell you thatL
T cos A = m g
T sin A = m a
Divide the secnd equation by the first.
tan A = a/g
a = artan a/g
Now solve for T
Hint: Add the squares of each of the first two equations 
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