The problem is as follows:
Suppose the length of the pendulum is decreased by slowly pulling the string up through the
hole. The rate of decrease of length is to be extremely slow compared with the frequency of
oscillation, so that we can define a period of oscillation for each length of...
I am stuck on an intergration and can't get a simple answer which i should get
p = (2*m*l^2)^(1/2)*(E+m*g*l*cos theta)^(1/2)
using small angle (need for question) cos theta = 1 - (theta^2 )/2
Then I intergrate from 0 to 2*Pi and get some very large eqn using a maths program, I can't...