- #1
oneplusone
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Homework Statement
A 2 kg ball is attached to the bottom end of a length of fishline with a breaking strength of 44.5 N. The top end of the fishline is held stationary. The ball is released from rest with the line taut and horizontal (theta = 90 degrees). At what angle theta (measured w/vertical) will the fishline break?
Homework Equations
none i can think of
The Attempt at a Solution
[tex] F=\dfrac{mv^2}{l} [/tex] where l is the length of the wire. then from conservation:
[tex] mgh = \dfrac{1}{2}mv^2 [/tex]
[tex] mg(l \sin \theta) = \dfrac{1}{2} ( F\cdot l) [/tex]
[tex] F = 2mg\sin \theta = 44.5 [/tex]
Which is incorrect as sin theta must be < 1.