Tension in pendulum SHM?
In general, how do you get the tension in the string of a simple pendulum set-up?
So the simple pendulum is attached to a light string and set into motion.
What's the formula for the tension when the bob passes through the equilibrium position? What about at an angle?
Thank you.
Edit: I drew a diagram, here it is below. I've also worked it out myself but I just wanted to make sure.
So the simple pendulum is attached to a light string and set into motion.
What's the formula for the tension when the bob passes through the equilibrium position? What about at an angle?
Thank you.
Edit: I drew a diagram, here it is below. I've also worked it out myself but I just wanted to make sure.
(edited 9 years ago)
The tension in the pendulum at the equilibrium position must satisfy the formula
T - mg = mv2/r
where v is the speed of the bob at that point and r is the length of the string.
The equation is equating the centripetal force on the bob to the resultant force on it due to its weight and the tension in the string.
T - mg = mv2/r
where v is the speed of the bob at that point and r is the length of the string.
The equation is equating the centripetal force on the bob to the resultant force on it due to its weight and the tension in the string.
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