In: Advanced Math
(a) Use the result of Exercise above to fine the moment of inertia of a uniform solid ball of mass m and radius b about a diameter of the ball.
(b) Use the result of Exercise above to find the moment of inertia of a hollow spherical shell of mass m and radius b about a diameter of the shell.
Solution
(a) Use the result of Exercise above to fine the moment of inertia of a uniform solid ball of mass m and radius b about a diameter of the ball.
By applying the result from exercise 20 , when
In this case a=0, then Iz=2mb2/5
Therefore, Iz=2mb2/5
(b) Use the result of Exercise above to find the moment of inertia of a hollow spherical shell of mass m and radius b about a diameter of the shell.
By applying the result from exercise 20 , when
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Therefore, Iz=2mb2/5