Homework Statement
http://www.flickr.com/photos/50468243@N02/8577233960/
Homework Equations
The Attempt at a Solution
In the pic, the noticeable difference between my answer and Wolframalpha's is the tan[log(sin x+1) to base 5]. If I do logarithmic differentiation, what I get is...
Homework Statement
A simple pendulum is swinging. Its mass is m and its length is L. What is its gravitational potential energy if it is oriented at 30° with respect to the vertical? (Let gravitational potential energy be zero if it is in the vertical orientation).
Homework Equations
U =...