A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exert a constant force pulls the wagon through the same displacement. They do the same amount of work,but the husband's pulling force is directed 58grades above the horizontal , and the wife's pulling force is directed 38 grades above the horizontal. the husband pulls with a force whose magnitude is 67N. WHat is the magnitude of the pulling force exerted by his wife? What laws apply to this exersice?and what principle of physic?

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