The black squirrel has zero kinetic energy (if it's not moving) and lower gravitational potential energy than the red squirrel or zero gravitational potential energy if the ground is assumed to be zero gravitational potential line.
 
        
                    
             
        
        
        
Answer:
422.36 N
Explanation:
given,
time of rotation = 4.30 s
T = 4.30 s
Assuming the diameter of the ring equal to 16 m
radius, R = 8 m


   v = 11.69 m/s
now, Force does the ring push on her at the top
 
 
 
 
 
 N = 422.36 N
The force exerted by the ring to push her is equal to 422.36 N.
 
        
             
        
        
        
The moment of inertia of a uniform solid sphere is equal to 0.448  .
.
<u>Given the following data:</u>
Mass of sphere = 7 kg.
Radius of sphere = 0.4 meter.
<h3>How to calculate moment of inertia.</h3>
Mathematically, the moment of inertia of a solid sphere is given by this formula:

<u>Where:</u>
- I is the moment of inertia.
Substituting the given parameters into the formula, we have; 

I = 0.448  .
.
Read more on inertia here: brainly.com/question/3406242
 
        
             
        
        
        
P = m x v 
P = 30 x 10 
 =300
        
             
        
        
        
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