Momentum Transfer from Beam Counter Weights

This Excel spreadsheet calculates the momentum transfer in pounds that occurs during the up and down stroke of a conventional unit that has counter weights on the tail of the beam. The dimensions of the unit, the mass of the beam counter balance weights, and the speed of the unit must be known. The results show the extra force that the unit structure and bearings must support due to the acceleration of the beam. The larger the mass of the beam weights and the faster the pumping speed, the larger the extra force that is created by momentum transfer.