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Standard XII

Physics

Radius of Gyration

Moment of ine...

Question

Moment of inertia of two spheres of equal radii are equal. One of the spheres is solid and has the mass 5 kg and the other is a hollow sphere. What is the mass of hollow sphere?

2/3 kg

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3 kg

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5 kg

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2/5 kg

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Solution

The correct option is B
3 kg

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Similar questions

The moment of inertia of two spheres of equal masses is equal. If one of the spheres is solid of radius √45 m and the other is a hollow sphere. What is the radius of the hollow sphere?

Q. Assertion (A) :

I_{S}

and

I_{H}

are the moments of inertia about the diameters of a solid sphere and thin walled hollow sphere respectively. If radii and the masses of the above are equal, then

I_{H}

I_{S}

Reason (R) : In a solid sphere, the mass is continuously and regularly distributed about centre, whereas in case of hollow sphere the mass is concentrated on the surface of hollow sphere.

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Q. In the figure shown below, a solid sphere of radius

5 m

is arranged concentrically with a hollow sphere of radius

9 m

. Find the moment of inertia of the system about an axis passing through their centre. (Take

m_{s} =

mass of solid sphere

= 5 kg, m_{h} =

mass of hollow sphere

= 3 kg

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Moment of inertia of two spheres of equal radii are equal. One of the spheres is solid and has the mass 5 kg and the other is a hollow sphere. What is the mass of hollow sphere?

The correct option is B 3 kg

The correct option is B
3 kg