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Crystalline and Amorphous Solid

two loops Pan...

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two loops PandQ are made from a uniform wire .The radii ofP and Q areR1and R2 respectively and their moment of inertia axes normallc through centre are I1 and I2 respectively if I2/I1 =4 then find R2/R

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Q. Two loops P and Q are made from a uniform wire. The radii of P and Q are

r_{1}

r_{2}

respectively, and their moments of inertia about their own axises are

I_{1}

I_{2}

respectively. If

I_{2} = 4 I_{1}

r_{1} / r_{2}

Q. Consider two uniform discs of the same thickness and different radii

R_{1} = R and R_{2} = α R

, made of the same material. If the ratio of their moments of inertia

I_{1}

I_{2}

, respectively, about their axes is

I_{1} : I_{2} = 1 : 16

, then the value of

α

Q. Two concentric circular loops of radii

r_{1}

r_{2}

carry clockwise and anticlockwise currents

i_{1}

i_{2}

. If the the centre is a null point, then

i_{1}

i_{2}

Q. Two loops P and Q are made from a same uniform wire. The radii of P and Q are

r_{1}

r_{2}

respectively and their moments of inertia are

l_{1}

l_{2}

respectively. If

\frac{l_{2}}{l_{1}}

\frac{r_{2}}{r_{1}}

A B C D

is a square plate with centre

O

. The moment of inertia of the plate about the axes

1, 2, 3

4

I_{1}, I_{2}, I_{3} & I_{4}

respectively. It follows that

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