06. Rolling Motion
Rotational Motion

269589 A thin metal rod of length \(0.5 \mathrm{~m}\) is vertically straight on horizontal floor. This rod is falling freely to a side without slipping. The angular velocity of rod when its top end touches the floor is (nearly)

1 \(7 \mathrm{rad} \mathrm{s}^{-1}\)
2 \(4.2 \mathrm{rad} \mathrm{s}^{-1}\)
3 \(3.5 \mathrm{rad} \mathrm{s}^{-1}\)
4 \(2.1 \mathrm{rad} \mathrm{s}^{-1}\)
Rotational Motion

269590 What should be the minimum coefficient of static friction between the plane and the cylinder, for the cylinder not to slip on an inclined plane

1 \(\frac{1}{3} \tan \theta\)
2 \(\frac{1}{3} \sin \theta\)
3 \(\frac{2}{3} \tan \theta\)
4 \(\frac{2}{3} \sin \theta\)
Rotational Motion

269591 A thin metal disc of radius \(25 \mathrm{~cm}\) and mass \(2 \mathrm{~kg}\) starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is \(8 \mathrm{~J}\) at the foot of this inclined plane, then linear velocity of centre of mass of disc is

1 \(2 \mathrm{~m} / \mathrm{s}\)
2 \(4 \mathrm{~m} / \mathrm{s}\)
3 \(6 \mathrm{~m} / \mathrm{s}\)
4 \(8 \mathrm{~m} / \mathrm{s}\)
Rotational Motion

269648 Assume the earth's orbit around the sun as circular and the distance between their centres as ' \(D\) ' Mass of the earth is ' \(M\) ' and its radius is ' \(R\) ' If earth has an angular velocity ' \(\omega \omega_{0}\) ' with respect to its centre and ' \(\omega\) ' with respect to the centre of the sun, the total kinetic energy of the earth is:

1
2
3
4 \(\frac{2}{5} M R^{2} \omega_{0}^{2} \frac{\square}{\square}+\square \omega \Pi_{0}+\frac{5}{2} \square \frac{D \omega}{R \omega_{0}} \overbrace{}^{2}]\)
Rotational Motion

269589 A thin metal rod of length \(0.5 \mathrm{~m}\) is vertically straight on horizontal floor. This rod is falling freely to a side without slipping. The angular velocity of rod when its top end touches the floor is (nearly)

1 \(7 \mathrm{rad} \mathrm{s}^{-1}\)
2 \(4.2 \mathrm{rad} \mathrm{s}^{-1}\)
3 \(3.5 \mathrm{rad} \mathrm{s}^{-1}\)
4 \(2.1 \mathrm{rad} \mathrm{s}^{-1}\)
Rotational Motion

269590 What should be the minimum coefficient of static friction between the plane and the cylinder, for the cylinder not to slip on an inclined plane

1 \(\frac{1}{3} \tan \theta\)
2 \(\frac{1}{3} \sin \theta\)
3 \(\frac{2}{3} \tan \theta\)
4 \(\frac{2}{3} \sin \theta\)
Rotational Motion

269591 A thin metal disc of radius \(25 \mathrm{~cm}\) and mass \(2 \mathrm{~kg}\) starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is \(8 \mathrm{~J}\) at the foot of this inclined plane, then linear velocity of centre of mass of disc is

1 \(2 \mathrm{~m} / \mathrm{s}\)
2 \(4 \mathrm{~m} / \mathrm{s}\)
3 \(6 \mathrm{~m} / \mathrm{s}\)
4 \(8 \mathrm{~m} / \mathrm{s}\)
Rotational Motion

269648 Assume the earth's orbit around the sun as circular and the distance between their centres as ' \(D\) ' Mass of the earth is ' \(M\) ' and its radius is ' \(R\) ' If earth has an angular velocity ' \(\omega \omega_{0}\) ' with respect to its centre and ' \(\omega\) ' with respect to the centre of the sun, the total kinetic energy of the earth is:

1
2
3
4 \(\frac{2}{5} M R^{2} \omega_{0}^{2} \frac{\square}{\square}+\square \omega \Pi_{0}+\frac{5}{2} \square \frac{D \omega}{R \omega_{0}} \overbrace{}^{2}]\)
Rotational Motion

269589 A thin metal rod of length \(0.5 \mathrm{~m}\) is vertically straight on horizontal floor. This rod is falling freely to a side without slipping. The angular velocity of rod when its top end touches the floor is (nearly)

1 \(7 \mathrm{rad} \mathrm{s}^{-1}\)
2 \(4.2 \mathrm{rad} \mathrm{s}^{-1}\)
3 \(3.5 \mathrm{rad} \mathrm{s}^{-1}\)
4 \(2.1 \mathrm{rad} \mathrm{s}^{-1}\)
Rotational Motion

269590 What should be the minimum coefficient of static friction between the plane and the cylinder, for the cylinder not to slip on an inclined plane

1 \(\frac{1}{3} \tan \theta\)
2 \(\frac{1}{3} \sin \theta\)
3 \(\frac{2}{3} \tan \theta\)
4 \(\frac{2}{3} \sin \theta\)
Rotational Motion

269591 A thin metal disc of radius \(25 \mathrm{~cm}\) and mass \(2 \mathrm{~kg}\) starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is \(8 \mathrm{~J}\) at the foot of this inclined plane, then linear velocity of centre of mass of disc is

1 \(2 \mathrm{~m} / \mathrm{s}\)
2 \(4 \mathrm{~m} / \mathrm{s}\)
3 \(6 \mathrm{~m} / \mathrm{s}\)
4 \(8 \mathrm{~m} / \mathrm{s}\)
Rotational Motion

269648 Assume the earth's orbit around the sun as circular and the distance between their centres as ' \(D\) ' Mass of the earth is ' \(M\) ' and its radius is ' \(R\) ' If earth has an angular velocity ' \(\omega \omega_{0}\) ' with respect to its centre and ' \(\omega\) ' with respect to the centre of the sun, the total kinetic energy of the earth is:

1
2
3
4 \(\frac{2}{5} M R^{2} \omega_{0}^{2} \frac{\square}{\square}+\square \omega \Pi_{0}+\frac{5}{2} \square \frac{D \omega}{R \omega_{0}} \overbrace{}^{2}]\)
Rotational Motion

269589 A thin metal rod of length \(0.5 \mathrm{~m}\) is vertically straight on horizontal floor. This rod is falling freely to a side without slipping. The angular velocity of rod when its top end touches the floor is (nearly)

1 \(7 \mathrm{rad} \mathrm{s}^{-1}\)
2 \(4.2 \mathrm{rad} \mathrm{s}^{-1}\)
3 \(3.5 \mathrm{rad} \mathrm{s}^{-1}\)
4 \(2.1 \mathrm{rad} \mathrm{s}^{-1}\)
Rotational Motion

269590 What should be the minimum coefficient of static friction between the plane and the cylinder, for the cylinder not to slip on an inclined plane

1 \(\frac{1}{3} \tan \theta\)
2 \(\frac{1}{3} \sin \theta\)
3 \(\frac{2}{3} \tan \theta\)
4 \(\frac{2}{3} \sin \theta\)
Rotational Motion

269591 A thin metal disc of radius \(25 \mathrm{~cm}\) and mass \(2 \mathrm{~kg}\) starts from rest and rolls down on an inclined plane. If its rotational kinetic energy is \(8 \mathrm{~J}\) at the foot of this inclined plane, then linear velocity of centre of mass of disc is

1 \(2 \mathrm{~m} / \mathrm{s}\)
2 \(4 \mathrm{~m} / \mathrm{s}\)
3 \(6 \mathrm{~m} / \mathrm{s}\)
4 \(8 \mathrm{~m} / \mathrm{s}\)
Rotational Motion

269648 Assume the earth's orbit around the sun as circular and the distance between their centres as ' \(D\) ' Mass of the earth is ' \(M\) ' and its radius is ' \(R\) ' If earth has an angular velocity ' \(\omega \omega_{0}\) ' with respect to its centre and ' \(\omega\) ' with respect to the centre of the sun, the total kinetic energy of the earth is:

1
2
3
4 \(\frac{2}{5} M R^{2} \omega_{0}^{2} \frac{\square}{\square}+\square \omega \Pi_{0}+\frac{5}{2} \square \frac{D \omega}{R \omega_{0}} \overbrace{}^{2}]\)