269409 If the radius of earth shrinks by\(0.2 \%\) without change in its mass, the \(\%\) change in its angular velocity is

269402 The diameter of a disc is\(1 \mathrm{~m}\). It has a mass of \(20 \mathrm{~kg}\). It is rotating about its axis with a speed of 120rotations in one minute. Its angular momentum in \(\mathbf{k g ~ m}^{2} / \mathrm{s}\) is

269403 If the earth were to suddenly contract to\(1 / \mathbf{n}^{\text {th }}\) of its present radius without any change in its mass, the duration of the new day will be nearly

269404 A particle performs uniform circular motion with an angular momentum\(L\). If the angular frequency \(f\) of the particle is doubled, and kinetic energy is halved, its angular momentum becomes

269409 If the radius of earth shrinks by\(0.2 \%\) without change in its mass, the \(\%\) change in its angular velocity is

269402 The diameter of a disc is\(1 \mathrm{~m}\). It has a mass of \(20 \mathrm{~kg}\). It is rotating about its axis with a speed of 120rotations in one minute. Its angular momentum in \(\mathbf{k g ~ m}^{2} / \mathrm{s}\) is

269403 If the earth were to suddenly contract to\(1 / \mathbf{n}^{\text {th }}\) of its present radius without any change in its mass, the duration of the new day will be nearly

269404 A particle performs uniform circular motion with an angular momentum\(L\). If the angular frequency \(f\) of the particle is doubled, and kinetic energy is halved, its angular momentum becomes

269409 If the radius of earth shrinks by\(0.2 \%\) without change in its mass, the \(\%\) change in its angular velocity is

269402 The diameter of a disc is\(1 \mathrm{~m}\). It has a mass of \(20 \mathrm{~kg}\). It is rotating about its axis with a speed of 120rotations in one minute. Its angular momentum in \(\mathbf{k g ~ m}^{2} / \mathrm{s}\) is

269403 If the earth were to suddenly contract to\(1 / \mathbf{n}^{\text {th }}\) of its present radius without any change in its mass, the duration of the new day will be nearly

269404 A particle performs uniform circular motion with an angular momentum\(L\). If the angular frequency \(f\) of the particle is doubled, and kinetic energy is halved, its angular momentum becomes

269409 If the radius of earth shrinks by\(0.2 \%\) without change in its mass, the \(\%\) change in its angular velocity is

269402 The diameter of a disc is\(1 \mathrm{~m}\). It has a mass of \(20 \mathrm{~kg}\). It is rotating about its axis with a speed of 120rotations in one minute. Its angular momentum in \(\mathbf{k g ~ m}^{2} / \mathrm{s}\) is

269403 If the earth were to suddenly contract to\(1 / \mathbf{n}^{\text {th }}\) of its present radius without any change in its mass, the duration of the new day will be nearly

269404 A particle performs uniform circular motion with an angular momentum\(L\). If the angular frequency \(f\) of the particle is doubled, and kinetic energy is halved, its angular momentum becomes