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Last Updated On 01-06-2023 - By Jeesha Sara

Two circular discs  and  are of equal masses and thicknesses but made of metal with densities and If their moments of inertia about an axis passing through their centres and perpendicular to circular faces are and ,then

a)

b)

c)

d)


Question ID - 100112 :-

Two circular discs  and  are of equal masses and thicknesses but made of metal with densities and If their moments of inertia about an axis passing through their centres and perpendicular to circular faces are and ,then

a)

b)

c)

d)

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

Let  be the mass of each disc. Let and  be the radii of discs and , respectively. Then

As  so Now,

 i.e.,



Next Question :

In the number series given below, one number is missing. Find the missing term.

20, 141, 310, 599, 960, 1489, …

(a)

2430

(b)

2330

(c)

2230

(d)

2130


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