Answer:
The question has some details missing, but I have added it in the solution.
Explanation:
There are missing details in the question, but I have added it in my explanation.
Concept of Kinetic and potential energy is applied.
Total Energy = Kinetic + Potential
In this case mass = 75.0kg, g = 9.8 N/kg and Velocity = 0m/s
The steps are as shown in the attachment