ANGULAR MOMENTUM \& CONSERVATION OF ANGULAR MOMENTUM
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Rotational Motion

269460 If the mass of earth and radius suddenly become 2 times and 1/4th of the present value, the length of the day becomes

1 \(24 h\)
2 \(6 h\)
3 \(3 / 2 \mathrm{~h}\)
4 \(3 h\)
Rotational Motion

269324 An ice block is in at rough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

1 increases
2 decreases
3 remains same
4 becomes double
Rotational Motion

269325 A circular disc is rotating about its own axis, the direction of its angular momentum is

1 radial
2 along axis of rotation
3 along tangent
4 perpendicular to the direction of angular velocity
Rotational Motion

269326 A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. \(I, \omega\), L, E are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

1 I increases and\(\omega\), \(E\) decrease but \(L\) is constant
2 I decreases,\(\boldsymbol{\omega}\) and \(E\) increase but \(L\) is constant
3 I increases,\(\boldsymbol{\omega}\) decreases, \(L\) and \(E\) are constant
4 I increases,wincreases but \(L\) and \(E\) are constant
Rotational Motion

269327 If polar ice caps melt, then the time duration of one day

1 increases
2 decreases
3 does not change
4 zero
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Rotational Motion

269460 If the mass of earth and radius suddenly become 2 times and 1/4th of the present value, the length of the day becomes

1 \(24 h\)
2 \(6 h\)
3 \(3 / 2 \mathrm{~h}\)
4 \(3 h\)
Rotational Motion

269324 An ice block is in at rough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

1 increases
2 decreases
3 remains same
4 becomes double
Rotational Motion

269325 A circular disc is rotating about its own axis, the direction of its angular momentum is

1 radial
2 along axis of rotation
3 along tangent
4 perpendicular to the direction of angular velocity
Rotational Motion

269326 A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. \(I, \omega\), L, E are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

1 I increases and\(\omega\), \(E\) decrease but \(L\) is constant
2 I decreases,\(\boldsymbol{\omega}\) and \(E\) increase but \(L\) is constant
3 I increases,\(\boldsymbol{\omega}\) decreases, \(L\) and \(E\) are constant
4 I increases,wincreases but \(L\) and \(E\) are constant
Rotational Motion

269327 If polar ice caps melt, then the time duration of one day

1 increases
2 decreases
3 does not change
4 zero
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Rotational Motion

269460 If the mass of earth and radius suddenly become 2 times and 1/4th of the present value, the length of the day becomes

1 \(24 h\)
2 \(6 h\)
3 \(3 / 2 \mathrm{~h}\)
4 \(3 h\)
Rotational Motion

269324 An ice block is in at rough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

1 increases
2 decreases
3 remains same
4 becomes double
Rotational Motion

269325 A circular disc is rotating about its own axis, the direction of its angular momentum is

1 radial
2 along axis of rotation
3 along tangent
4 perpendicular to the direction of angular velocity
Rotational Motion

269326 A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. \(I, \omega\), L, E are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

1 I increases and\(\omega\), \(E\) decrease but \(L\) is constant
2 I decreases,\(\boldsymbol{\omega}\) and \(E\) increase but \(L\) is constant
3 I increases,\(\boldsymbol{\omega}\) decreases, \(L\) and \(E\) are constant
4 I increases,wincreases but \(L\) and \(E\) are constant
Rotational Motion

269327 If polar ice caps melt, then the time duration of one day

1 increases
2 decreases
3 does not change
4 zero
For More Updates join with Us
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Rotational Motion

269460 If the mass of earth and radius suddenly become 2 times and 1/4th of the present value, the length of the day becomes

1 \(24 h\)
2 \(6 h\)
3 \(3 / 2 \mathrm{~h}\)
4 \(3 h\)
Rotational Motion

269324 An ice block is in at rough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

1 increases
2 decreases
3 remains same
4 becomes double
Rotational Motion

269325 A circular disc is rotating about its own axis, the direction of its angular momentum is

1 radial
2 along axis of rotation
3 along tangent
4 perpendicular to the direction of angular velocity
Rotational Motion

269326 A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. \(I, \omega\), L, E are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

1 I increases and\(\omega\), \(E\) decrease but \(L\) is constant
2 I decreases,\(\boldsymbol{\omega}\) and \(E\) increase but \(L\) is constant
3 I increases,\(\boldsymbol{\omega}\) decreases, \(L\) and \(E\) are constant
4 I increases,wincreases but \(L\) and \(E\) are constant
Rotational Motion

269327 If polar ice caps melt, then the time duration of one day

1 increases
2 decreases
3 does not change
4 zero
NEET DIGITAL LIBRARY
Rotational Motion

269460 If the mass of earth and radius suddenly become 2 times and 1/4th of the present value, the length of the day becomes

1 \(24 h\)
2 \(6 h\)
3 \(3 / 2 \mathrm{~h}\)
4 \(3 h\)
Rotational Motion

269324 An ice block is in at rough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

1 increases
2 decreases
3 remains same
4 becomes double
Rotational Motion

269325 A circular disc is rotating about its own axis, the direction of its angular momentum is

1 radial
2 along axis of rotation
3 along tangent
4 perpendicular to the direction of angular velocity
Rotational Motion

269326 A ballet dancer is rotating about his own vertical axis on smooth horizontal floor. \(I, \omega\), L, E are moment of inertia, angular velocity, angular momentum, rotational kinetic energy of ballet dancer respectively. If ballet dancer stretches himself away from his axis of rotation, then

1 I increases and\(\omega\), \(E\) decrease but \(L\) is constant
2 I decreases,\(\boldsymbol{\omega}\) and \(E\) increase but \(L\) is constant
3 I increases,\(\boldsymbol{\omega}\) decreases, \(L\) and \(E\) are constant
4 I increases,wincreases but \(L\) and \(E\) are constant
Rotational Motion

269327 If polar ice caps melt, then the time duration of one day

1 increases
2 decreases
3 does not change
4 zero