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Question: The human mandible (lower jaw) is attached to the temporo mandibular joint (TMJ). The masseter muscle is largely responsible for pulling the mandible upward when you are talking or eating. It is attached at a horizontal distance of about 2.5 cm from the TMJ. If this muscle exerts a force of 238 N when you bite, what is the force your incisors exert? The horizontal distance from the TMJ to your incisors is 6.6 cm.

I need help to solve the above question and assume that both forces are vertical.

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