Moment of Inertia (MI) of a triangle of base 'b' and height 'h' about its base is expressed as

This question was previously asked in
WBPSC JE Civil 2016 Official Paper
View all WBPSC JE Papers >

Answer (Detailed Solution Below)

Option 2 :
Free
WBPSC JE Civil Soil Mechanics Mock Test
20 Qs. 40 Marks 25 Mins

Detailed Solution

Download Solution PDF

Concept:

Moment of inertia of a triangle with base b and height h

Parallel axis theorem

  • Parallel axis theorem is used to find a moment of inertia about an axis which is at some distance from the centroidal axis and parallel to centroidal.
  • Suppose an axis is at distance d from the centroidal axis and parallel to the centroidal axis.

According to the parallel axis theorem, the moment of inertia about that axis is given by,

Moment of inertia about the centroidal axis of the triangle

Applying parallel axis theorem we get

Latest WBPSC JE Updates

Last updated on Jun 24, 2025

-> WBPSC JE recruitment 2025 notification will be released soon. 

-> Candidates with a Diploma in the relevant engineering stream are eligible forJunior Engineer post. 

-> Candidates appearing in the exam are advised to refer to the WBPSC JE syllabus and exam pattern for their preparations. 

-> Practice WBPSC JE previous year question papers to check important topics and chapters asked in the exam.

More Moment of Inertia and Centroid Questions

Hot Links: teen patti royal - 3 patti teen patti gold online teen patti master list teen patti dhani teen patti sequence