- #1
lu22
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Homework Statement
The maximum speed of a pendulum is .55 m/s. if the pendulum makes a maximum angle of 8 degrees with the vertical what is the length of the pendulum? The back of the book says that the answer is 1.59m.
Homework Equations
Its in the chapter of our book entitled 'Conservation of Energy' so I'm assuming I use the equations dealing with Kinetic & Potential Energy
The Attempt at a Solution
I tried using 1/2mv^2 = mv^2 / r but i got r = 2m for an answer and the back of the book says its 1.59m so that can't be the right equation