Please help thank you

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Explanation:

First we build the Free Body Diagram (please see first image for further details) associated with the mass, we notice that system consist of a three forces that form a right triangle (please see second image for further details): (i) The weight of the mass, (ii) two tensions.

The requested tension and angle can be found by the following trigonometrical and geometrical expressions:

(1)

(2)

Where:

- Weight of the mass, measured in newtons.

, - Tensions from the mass, measured in newtons.

If we know that and , then the requested values are, respectively:

the part of the wave he is travelling on is the crest