Question

Which of the following statements is correct about the principal moments of inertia of an XY molecule that lies on the A axis?

Select one:

a. Ia > Ib, and Ib = Ic

b. Ia = Ib = Ic

c. Ia = 0, and Ic = Ic

d. Ia = Ib, and Ic = 0

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Answer 1

thanks for points........,

Answer 2

The correct answer is option (c.) Ia = 0, and Ic = Ic.

Explanation:

• Ia = 0, and Ic = Ic statements is correct about the principal moments of inertia of an XY molecule that lies on the A axis.
• A principal axis of rotation (or principal direction) is an eigenvector of the mass moment of inertia tensor (introduced in the previous section) defined relative to some point (typically the center of mass).
• The corresponding eigenvalues are called the principal moments of inertia.
• The principal moments of inertia is the sum of the products formed by multiplying the mass (or sometimes, the area) of each element of a figure by the square of its distance from a specified line.
• It is Also known as rotational inertia.