ملتقى الفيزيائيين العرب > قسم المناهج الدراسية > فيزياء المرحلة الجامعية. | ||
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مساعدة في حل سؤالين فيزياء
لدي سؤالين:
1) A dog in an open field runs 12.0m east and then 30.0m in a direction 52.0∘ west of north. In what direction must the dog then run to end up 10.0m south of her original starting point? How far must the dog then run to end up 10.0m south of her original starting point? Express your answer with the appropriate units. 2) Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 ∘ west of north, and the resultant of these two pulls is 590.0N directly northward. Use vector components to find the magnitude of each of these pulls. Assume that the smaller pull has a component directed to the north. Enter your answers numerically separated by a comma. Use vector components to find the direction of the smaller pull. Assume that the smaller pull has a component directed to the north. |
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