The work done by the sailor is 14,700 J. Work can be defined as a change in energy.
How to calculate the work?
The can be calculated by multiplying the force with displacement.
[tex]W = F d[/tex]
Where,
[tex]F[/tex] - force = [tex]mg[/tex] = 75 kg x 9.8 = 735 N
[tex]d[/tex] - displacement = [tex]h[/tex] (height)
First, calculate the displacement :
[tex]h[/tex] = 28.3 m · sin 45°
[tex]h[/tex]= 28.3 m · 0.707
[tex]h[/tex] = 20 m
Put the values in the formula,
W = 735 x 20
W = 14,700 J
Therefore, the work done by the sailor is 14,700 J.
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