Posted by Luricela on Saturday, April 17, 2010 at 7:05pm.
The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 305 grams, and it is released at an angle of 10° to the vertical. a) With what frequency does it vibrate? Assume SHM. (b) What is the pendulum bob's speed when it passes through the lowest point of the swing? (c) What is the total energy stored in this oscillation, assuming no losses?

Physics  drwls, Saturday, April 17, 2010 at 10:40pm
a) f = [1/(2pi)] sqrt (g/L)
This formula should be in your text or lecture notes.
b) maximum kinetic energy = potential energy when lifted to maximum angle
= M g L (1  cos 10)
Set that equal to (1/2)M Vmax^2. Cancel the M's and solve for Vmax
c) M g L(1cos 10)

Thanks  Luricela, Sunday, April 18, 2010 at 10:07am
Thank You drwls :) we did get a formula for frequncy similar to the one you gave me but the one i had didn't work. Once again Thank you for your help :)
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