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Why do you need to use three points of contact when getting in or out of a machine?
Wiki User
∙ 15y ago
I would presume it is a safety rule to make sure that your body is stable so you don't fall from -- or into -- the machine and get hurt.
Wiki User
∙ 15y ago
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Why does a three legged support work better than a four legged one?
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It is important to understand the 3-points of contact rule. Stated quite simply, always keep three points of contact with the ground or the equipment until you are stable on the equipment or on the ground. What this means is that before you lift one of your legs to climb up on the equipment, you must have both hands firmly grasping the equipment to help pull yourself up; before you let go of one of the hand holds when dismounting, you need to make sure that both feet are firmly planted on the ground.
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It is the circumcentre of the triangle formed by the three points. Draw the perpendicular bisectors of two of the lines joining the three points. They will meet at the point that is equidistant from the three points.
