Answer to Question #168981 in Physics for Tayjah-Lee Williams

Question #168981

A forearm is is holding a ball of weight 50 Newton horizontally. The elbow is at point a and acts like a fulcrum. The weight of the forearm is 20 Newton and is 14 cm away from the elbow. The bicep muscles exert an upward force.Use the principal of moments to calculate the force x exerted by the bicep muscles

Expert's answer

"(50)(14)+0.5(20)(14)=(14)F\\\\F=60\\ N"

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