Question

The product and polar second moments of area Ixy and Ip can be negative numbers. a) True b) False

Answer 1

b) False

Step-by-step explanation:

We know that polar moment of inertia is given as follows

`I_p = I_x+I_y`

And we know that
`I_x,I_y` can not be negative because these are the products of dimensions of structure.

But on the other hand
`I_(xy)` can be positive or negative .

`I_(xy)` is not equal to the product of
.