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Physics
Classical Physics
Mechanics
Pendulum's Tension using Force reasoning and Newtons 3rd Law.
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[QUOTE="spsch, post: 6204952, member: 650597"] Hi, I have a conceptual question. I was doing some problems on pendulums and found something that confused me. I attached a drawing. I used to always solve these problems by using some trigonometry and trying to find the Tension. i.e. ## m*g = F (of the Tension) * cos(theta) ## so ## \frac {m*g} {cos(theta)} = F ## But then, if I imagine the string continuing and reason that the Force of the Tension has to also equal the gravitational force in that direction I get ## F = m*g*cos(theta) ## which would make ## m*g*cos(theta) = \frac {m*g} {cos(theta)} ## Could someone point out where I'm making my thought mistake? Thank you very much! [/QUOTE]
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Forums
Physics
Classical Physics
Mechanics
Pendulum's Tension using Force reasoning and Newtons 3rd Law.
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