Question

Find the moment of inertia of a uniform metre scale of mass 250g about an axis at right angle to its length and located at 20 cm mark

Answer 1

Explanation:

Its MOI(moment of inertia) about C.O.M(centre of mass) :i.e- at 50cm is ML²/12

now applying parallel axis theorem ,

MOI about located mark = ML²/3 + M(30/100)²

answer is- 0.105 kg-m² (approx.)