CampusFin

Calculate the moment of inertia of the earth about its diameter, taking it to be a sphere of 10^25kg and diameter 12800 km?

Review the verified answer and explanation for this SPSC – Sindh Public Service Commission past-paper question on CampusFin.

Calculate the moment of inertia of the earth about its diameter, taking it to be a sphere of 10^25kg and diameter 12800 km? Answer: 1.64 × 10^38kgm^3

The moment of inertia of a solid sphere about its diameter is I=2/5MR².. Substituting Earth’s mass 10²⁵ kg and radius 6.4×10⁶m gives I~1.64×10³⁸kg\cdotpm²

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.