I believe the correct answer would be "A" energy source.
The solution would be like
this for this specific problem:
<span>v = ? </span><span>
<span>u = 0.0 m/s </span>
<span>a = 9.8 m/s^2 </span>
<span>s = 56.1 m </span></span>
<span>v^2 = (0.0 m/s)^2 + [2 *
(9.8 m/s^2) * (56 m) ] </span><span>
<span>v^2 = 2 * (9.8 m/s^2) * (56 m) </span>
<span>v^2 = 1,097.6 m^2/s^2 </span>
<span>v = SQRT {1,097.6 m^2/s^2 } </span></span>
v = 33.1 m/s
<span>v = u + at </span>
<span>(v - u) / a = t </span>
[ (33.1 m/s) - (0.0 m/s)
] / (9.8 m/s^2) = 3.38 seconds
If the pigeon is 56.0 m below the initial position of the
falcon, it will take 3.38 seconds for the falcon to reach the pigeon. I am
hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.
Part 1
If water does not spill at the top point of the circular motion then for the minimum speed condition we can say normal force will be zero at the top position
given that
R = 1 m
g = 9.8 m/s^2
now from above equation we have
Part b)
for minimum value of angular speed we will have
