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Serious neck injuries can occur when a football player is struck in the face guard of his helmet in the manner shown, giving rise to the guillotine mechanism. Determine the moment of the knee force P=50 lb at point A. What would be the magnitude of the nech force F so that it gives the counter balancing moment about A?




Serious neck injuries can occur when a football player is struck in the face guard of his helmet in the manner shown, giving rise to the guillotine mechanism. Determine the moment of the knee force P=50 lb at point A. What would be the magnitude of the nech force F so that it gives the counter balancing moment about A?