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1.Calculate the following; Potential Energy Langrangian Function Hamiltonian function

Consider a simple plane pendulum consisting of a mass m attached to a string of length I. After
the pendulum is set into motion, the length of the string is shortened at a constant rate
dl
-α = constant
dt
The suspension point remains fixed. The kinetic energy is given by
T = m(a² +1²0²).

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