As we know that centripetal force is given as
here we know that
m = 12000 kg
R = 18 m
here we assumed that radius is half of the length of blade as here the center of mass is concentrated at mid point of blade
now the force is given as
so above is the centripetal force on the blade
10 s
Explanation:
Given
Engine generates power
Force exerts
Distance traveled
work done is given by
Also, Energy is given as
Insert the values