Physics, 30.03.2020 17:48, tchou163

If a mass of 76 kg acts downward 0.38 m from the axis of rotation on one end of a board and another force of 129 N also acts downward, what is the moment arm of the second force to balance this system

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If a mass of 76 kg acts downward 0.38 m from the axis of rotation on one end of a board and another...