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A man wants to swim across a river from A to B and back from B to A always following line AB. The distance S between points A and B is S. The velocity of the river current v is constant over the entire width of the river. The line AB makes an angle α with the direction of current. Let the man travel with velocity u and at angle β to the line AB. Find time 't' by which he will be back. |
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Answer» A man wants to swim across a river from A to B and back from B to A always following line AB. The distance S between points A and B is S. The velocity of the river current v is constant over the entire width of the river. The line AB makes an angle α with the direction of current. Let the man travel with velocity u and at angle β to the line AB. Find time 't' by which he will be back.
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