Electromagnetic energy and momentum conservation in pendulum experiments

In a number of experiments, several researchers have argued that their experimental results are not in agreement with energy and momentum conservation in electrodynamics. In this paper, we show that the strict application of energy and momentum conservation is in complete agreement with their experiments. In this work, we introduce the local electric and magnetic fields inside the pendulum conductor, which allow us to make rigorous calculations for energy and momentum. With regard to the conservation of momentum, their experimentally measured momentum of the pendulum is 8.85 /spl times/ 10/sup -2/ kg/spl middot/m/s, while the value theoretically calculated by us is (8.35 /spl plusmn/ 0.84) /spl times/ 10/sup -2/ kg/spl middot/m/s, a fact that verifies the standard theory.