Posted by Claire on .
The boat is to be pulled onto the shore using two ropes. If the resultant force is to be 400N, directed along the keel, determine the magnitudes of forces T and P acting in each rope and the angle theta of P so that the magnitude of P is a minimum. T acts at 30 degrees from the keel.
How can I determine the value of P if it is a minimum? Do minimum forces make a specified angle with each other?

Engineering 
Steve,
It has to pull up with the same amount of force that the other one pulls down.
..while at the same time adding up to a horizontal force of 400N.