Hi, I am performing a set of tests using a pendulum. The test involves a pendulum of length 0.55metres, the weight of the entire pendulum is 2kilos. The test involves letting the pendulum go from a set height and calculating the force when it impacts an object held in a vice at the bottom of the arc. Force values need to be calculated for releasing the pendulum at 5 through to 45 degrees in 5 degrees incremements and with the weight of the pendulum changing from 1, 1.5, 2, 3kilos respectively. I have spent a number of hours trying to work it out however the formula I am using are not producing sensible results. Please could any of you help me with the necessary formula that I will need to perform the calculations. Cheers, Michael.