Formula for potential energy is V=mgh, where m is mass in KG, g is earth acceleration (10 m/s^2), and h its height in meters. We know mass, acceleration is constant and also known, we know height also. Lets substitute
V=75*10*300=225000[J]=225[kJ] - its the answer
        
             
        
        
        
The value of the force, F₀, at equilibrium is equal to the horizontal 
component of the tension in string 2.
Response:
- The value of F₀ so that string 1 remains vertical is approximately <u>0.377·M·g</u>
 
<h3>How can the equilibrium of forces be used to find the value of F₀?</h3>
Given:
The weight of the rod = The sum of the vertical forces in the strings
Therefore;
M·g = T₂·cos(37°) + T₁
The weight of the rod is at the middle.
Taking moment about point (2) gives;
M·g × L = T₁ × 2·L
Therefore;

Which gives;


F₀ = T₂·sin(37°)
 Which gives;

<u />
Learn more about equilibrium of forces here:
brainly.com/question/6995192
 
        
                    
             
        
        
        
if the color changes, it is neutral but if it stays the same, it is an acid.
 
        
             
        
        
        
(D) The gravitational force between the astronaut and the asteroid. 
Reason : 
All the other forces given in the options, except (D), doesn't account for the motion of the astronaut. They are the forces that act between nucleons or atoms and neither of them accounts for an objects motion. 
 
        
             
        
        
        
Answer: A 120 metros por segundo 
Explanation: multiplicas la velocidad por el tiempo