Question

Inertia

Answer 1

@esamalaa problem 2

Answer 2

That is the attachment. please download I'll delete it soon

Answer 3

ok you will dived the shape into 2 parts a triangle and quarter circle, then you will fine the centroide for each

Answer 4

its actually 2nd one

Answer 5

My though square and subtract 4 semicircles

Answer 6

The moment of inertia of semicircle= 4R/3pi

Answer 7

sorry above is the centroid

Answer 8

Moment of Inertia about the center= \[\frac{ \pi r^4 }{ 8 }- \frac{ 8r^4 }{ 9 \pi }\]