4 RBTS PAPER(PHYSICS)
4 RBTS PAPER

163783 A circular plate of diameter \(d\) is kept in contact with a square plate of edge \(d\) as shown in fig. The density of the material and the thickness are same everywhere. The centre of mass of the composite system will be

1 inside the circular plate
2 inside the square plate
3 at the point of contact
4 outside the system
4 RBTS PAPER

163784 The moment of inertia of a rod about an axis through its centre and perpendicular to it's length is \(\frac{1}{12} M L^2(m=\) mass \(\& L\) is the length of rod). The rod is bent in the middle so that the two halves make an angle of \(60^{\circ}\). The moment of inertia of the bent rod about the same axis perpendicular to length of each halves is :

1 \(\frac{1}{24} M L^2\)
2 \(\frac{1}{48} M L^2\)
3 \(\frac{1}{12} M L^2\)
4 \(\frac{1}{8} M L^2\)
4 RBTS PAPER

163785 Two bodies of mass \(1 \mathrm{~kg} \& 3 \mathrm{~kg}\) have position vectors \(\hat{i}+2 \hat{j}+\hat{k}\) and \(-3 \hat{i}-2 \hat{j}+\hat{k}\), respectively. The centre of mass of this system has a position vector :

1 \(-2 \hat{i}+\hat{k}\)
2 \(-2 \hat{i}-\hat{j}+\hat{k}\)
3 \(2 \hat{i}-\hat{j}-\hat{k}\)
4 \(-\hat{i}+\hat{j}+\hat{k}\)
4 RBTS PAPER

163786 A constant torque of \(1000 \mathrm{~N}-\mathrm{m}\) turns a wheel of moment of inertia \(200 \mathrm{~kg} \mathrm{-m^{2 }}\) about an axis through its centre. Its angular velocity after 3 sec is (starts from rest):

1 \(1 \mathrm{rad} / \mathrm{sec}\)
2 \(5 \mathrm{rad} / \mathrm{sec}\)
3 \(10 \mathrm{rad} / \mathrm{sec}\)
4 \(15 \mathrm{rad} / \mathrm{sec}\)
4 RBTS PAPER

163783 A circular plate of diameter \(d\) is kept in contact with a square plate of edge \(d\) as shown in fig. The density of the material and the thickness are same everywhere. The centre of mass of the composite system will be

1 inside the circular plate
2 inside the square plate
3 at the point of contact
4 outside the system
4 RBTS PAPER

163784 The moment of inertia of a rod about an axis through its centre and perpendicular to it's length is \(\frac{1}{12} M L^2(m=\) mass \(\& L\) is the length of rod). The rod is bent in the middle so that the two halves make an angle of \(60^{\circ}\). The moment of inertia of the bent rod about the same axis perpendicular to length of each halves is :

1 \(\frac{1}{24} M L^2\)
2 \(\frac{1}{48} M L^2\)
3 \(\frac{1}{12} M L^2\)
4 \(\frac{1}{8} M L^2\)
4 RBTS PAPER

163785 Two bodies of mass \(1 \mathrm{~kg} \& 3 \mathrm{~kg}\) have position vectors \(\hat{i}+2 \hat{j}+\hat{k}\) and \(-3 \hat{i}-2 \hat{j}+\hat{k}\), respectively. The centre of mass of this system has a position vector :

1 \(-2 \hat{i}+\hat{k}\)
2 \(-2 \hat{i}-\hat{j}+\hat{k}\)
3 \(2 \hat{i}-\hat{j}-\hat{k}\)
4 \(-\hat{i}+\hat{j}+\hat{k}\)
4 RBTS PAPER

163786 A constant torque of \(1000 \mathrm{~N}-\mathrm{m}\) turns a wheel of moment of inertia \(200 \mathrm{~kg} \mathrm{-m^{2 }}\) about an axis through its centre. Its angular velocity after 3 sec is (starts from rest):

1 \(1 \mathrm{rad} / \mathrm{sec}\)
2 \(5 \mathrm{rad} / \mathrm{sec}\)
3 \(10 \mathrm{rad} / \mathrm{sec}\)
4 \(15 \mathrm{rad} / \mathrm{sec}\)
4 RBTS PAPER

163783 A circular plate of diameter \(d\) is kept in contact with a square plate of edge \(d\) as shown in fig. The density of the material and the thickness are same everywhere. The centre of mass of the composite system will be

1 inside the circular plate
2 inside the square plate
3 at the point of contact
4 outside the system
4 RBTS PAPER

163784 The moment of inertia of a rod about an axis through its centre and perpendicular to it's length is \(\frac{1}{12} M L^2(m=\) mass \(\& L\) is the length of rod). The rod is bent in the middle so that the two halves make an angle of \(60^{\circ}\). The moment of inertia of the bent rod about the same axis perpendicular to length of each halves is :

1 \(\frac{1}{24} M L^2\)
2 \(\frac{1}{48} M L^2\)
3 \(\frac{1}{12} M L^2\)
4 \(\frac{1}{8} M L^2\)
4 RBTS PAPER

163785 Two bodies of mass \(1 \mathrm{~kg} \& 3 \mathrm{~kg}\) have position vectors \(\hat{i}+2 \hat{j}+\hat{k}\) and \(-3 \hat{i}-2 \hat{j}+\hat{k}\), respectively. The centre of mass of this system has a position vector :

1 \(-2 \hat{i}+\hat{k}\)
2 \(-2 \hat{i}-\hat{j}+\hat{k}\)
3 \(2 \hat{i}-\hat{j}-\hat{k}\)
4 \(-\hat{i}+\hat{j}+\hat{k}\)
4 RBTS PAPER

163786 A constant torque of \(1000 \mathrm{~N}-\mathrm{m}\) turns a wheel of moment of inertia \(200 \mathrm{~kg} \mathrm{-m^{2 }}\) about an axis through its centre. Its angular velocity after 3 sec is (starts from rest):

1 \(1 \mathrm{rad} / \mathrm{sec}\)
2 \(5 \mathrm{rad} / \mathrm{sec}\)
3 \(10 \mathrm{rad} / \mathrm{sec}\)
4 \(15 \mathrm{rad} / \mathrm{sec}\)
4 RBTS PAPER

163783 A circular plate of diameter \(d\) is kept in contact with a square plate of edge \(d\) as shown in fig. The density of the material and the thickness are same everywhere. The centre of mass of the composite system will be

1 inside the circular plate
2 inside the square plate
3 at the point of contact
4 outside the system
4 RBTS PAPER

163784 The moment of inertia of a rod about an axis through its centre and perpendicular to it's length is \(\frac{1}{12} M L^2(m=\) mass \(\& L\) is the length of rod). The rod is bent in the middle so that the two halves make an angle of \(60^{\circ}\). The moment of inertia of the bent rod about the same axis perpendicular to length of each halves is :

1 \(\frac{1}{24} M L^2\)
2 \(\frac{1}{48} M L^2\)
3 \(\frac{1}{12} M L^2\)
4 \(\frac{1}{8} M L^2\)
4 RBTS PAPER

163785 Two bodies of mass \(1 \mathrm{~kg} \& 3 \mathrm{~kg}\) have position vectors \(\hat{i}+2 \hat{j}+\hat{k}\) and \(-3 \hat{i}-2 \hat{j}+\hat{k}\), respectively. The centre of mass of this system has a position vector :

1 \(-2 \hat{i}+\hat{k}\)
2 \(-2 \hat{i}-\hat{j}+\hat{k}\)
3 \(2 \hat{i}-\hat{j}-\hat{k}\)
4 \(-\hat{i}+\hat{j}+\hat{k}\)
4 RBTS PAPER

163786 A constant torque of \(1000 \mathrm{~N}-\mathrm{m}\) turns a wheel of moment of inertia \(200 \mathrm{~kg} \mathrm{-m^{2 }}\) about an axis through its centre. Its angular velocity after 3 sec is (starts from rest):

1 \(1 \mathrm{rad} / \mathrm{sec}\)
2 \(5 \mathrm{rad} / \mathrm{sec}\)
3 \(10 \mathrm{rad} / \mathrm{sec}\)
4 \(15 \mathrm{rad} / \mathrm{sec}\)