Question

Select the correct statement regarding the 1st and 2nd moment of area of circular lamina with radius 'R'

• A. 1st moment of area is always +ve and 2nd moment of area is always -ve.
• B. 1st moment of area and 2nd moment of area are always +ve.
• C. 1st moment of area is may be either -ve or +ve based on the chosen reference axes, but 2nd moment of area is always +ve.
• D. 1st moment of area is always -ve and 2nd moment of area is always +ve

Answer 1

Answer: (C)