ROTATIONAL VARIABLES
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Rotational Motion

269294 During rotation of a body, the position vector is along \(\mathrm{X}\)-axis and force vector is along \(\mathbf{Y}\)-axis, The direction of torque vector is

1 in the \(X-Y\) plane
2 along-ve Z-axis
3 along +ve Z-axis
4 in the \(X-Z\) plane
Rotational Motion

269295 If the direction of position vector\(\vec{r}\) is towards south and direction of force vector \(\vec{F}\) is towards east, then the direction of torque vector \(\tau\) is

1 towards north
2 towards west
3 vertically upward
4 vertically downward
Rotational Motion

269296 Which of the following is wrong?

1 Direction of torque is parallel to axis of rotation
2 Direction of moment of couple is perpendicular to the plane of rotation of body
3 Torque vector is perpendicular to both position vector and force vector
4 The direction of force vector is always perpendicular to both the directions of position vector and torque vector
Rotational Motion

269300 A wheel is free to rotate about its own axis without friction. A ropeis wound around the wheel. If other end of rope is pulled with a constant force, then true statement from the following is

1 constant torque is produced and the wheel is rotated with constant angular velocity
2 constant torque is produced and the wheel is rotated with constant angular acceleration
3 variable torque is produced and the wheel is rotated with variable angular velocity
4 variable torque is produced and the wheel is rotated with variable angular acceleration
Rotational Motion

269301 The following pairs of physical quantities are not analogous to each other in translatory motion and rotational motion

1 force, torque
2 mass, moment of inertia
3 couple, torque
4 linear momentum, angular momentum
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Rotational Motion

269294 During rotation of a body, the position vector is along \(\mathrm{X}\)-axis and force vector is along \(\mathbf{Y}\)-axis, The direction of torque vector is

1 in the \(X-Y\) plane
2 along-ve Z-axis
3 along +ve Z-axis
4 in the \(X-Z\) plane
Rotational Motion

269295 If the direction of position vector\(\vec{r}\) is towards south and direction of force vector \(\vec{F}\) is towards east, then the direction of torque vector \(\tau\) is

1 towards north
2 towards west
3 vertically upward
4 vertically downward
Rotational Motion

269296 Which of the following is wrong?

1 Direction of torque is parallel to axis of rotation
2 Direction of moment of couple is perpendicular to the plane of rotation of body
3 Torque vector is perpendicular to both position vector and force vector
4 The direction of force vector is always perpendicular to both the directions of position vector and torque vector
Rotational Motion

269300 A wheel is free to rotate about its own axis without friction. A ropeis wound around the wheel. If other end of rope is pulled with a constant force, then true statement from the following is

1 constant torque is produced and the wheel is rotated with constant angular velocity
2 constant torque is produced and the wheel is rotated with constant angular acceleration
3 variable torque is produced and the wheel is rotated with variable angular velocity
4 variable torque is produced and the wheel is rotated with variable angular acceleration
Rotational Motion

269301 The following pairs of physical quantities are not analogous to each other in translatory motion and rotational motion

1 force, torque
2 mass, moment of inertia
3 couple, torque
4 linear momentum, angular momentum
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Rotational Motion

269294 During rotation of a body, the position vector is along \(\mathrm{X}\)-axis and force vector is along \(\mathbf{Y}\)-axis, The direction of torque vector is

1 in the \(X-Y\) plane
2 along-ve Z-axis
3 along +ve Z-axis
4 in the \(X-Z\) plane
Rotational Motion

269295 If the direction of position vector\(\vec{r}\) is towards south and direction of force vector \(\vec{F}\) is towards east, then the direction of torque vector \(\tau\) is

1 towards north
2 towards west
3 vertically upward
4 vertically downward
Rotational Motion

269296 Which of the following is wrong?

1 Direction of torque is parallel to axis of rotation
2 Direction of moment of couple is perpendicular to the plane of rotation of body
3 Torque vector is perpendicular to both position vector and force vector
4 The direction of force vector is always perpendicular to both the directions of position vector and torque vector
Rotational Motion

269300 A wheel is free to rotate about its own axis without friction. A ropeis wound around the wheel. If other end of rope is pulled with a constant force, then true statement from the following is

1 constant torque is produced and the wheel is rotated with constant angular velocity
2 constant torque is produced and the wheel is rotated with constant angular acceleration
3 variable torque is produced and the wheel is rotated with variable angular velocity
4 variable torque is produced and the wheel is rotated with variable angular acceleration
Rotational Motion

269301 The following pairs of physical quantities are not analogous to each other in translatory motion and rotational motion

1 force, torque
2 mass, moment of inertia
3 couple, torque
4 linear momentum, angular momentum
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Rotational Motion

269294 During rotation of a body, the position vector is along \(\mathrm{X}\)-axis and force vector is along \(\mathbf{Y}\)-axis, The direction of torque vector is

1 in the \(X-Y\) plane
2 along-ve Z-axis
3 along +ve Z-axis
4 in the \(X-Z\) plane
Rotational Motion

269295 If the direction of position vector\(\vec{r}\) is towards south and direction of force vector \(\vec{F}\) is towards east, then the direction of torque vector \(\tau\) is

1 towards north
2 towards west
3 vertically upward
4 vertically downward
Rotational Motion

269296 Which of the following is wrong?

1 Direction of torque is parallel to axis of rotation
2 Direction of moment of couple is perpendicular to the plane of rotation of body
3 Torque vector is perpendicular to both position vector and force vector
4 The direction of force vector is always perpendicular to both the directions of position vector and torque vector
Rotational Motion

269300 A wheel is free to rotate about its own axis without friction. A ropeis wound around the wheel. If other end of rope is pulled with a constant force, then true statement from the following is

1 constant torque is produced and the wheel is rotated with constant angular velocity
2 constant torque is produced and the wheel is rotated with constant angular acceleration
3 variable torque is produced and the wheel is rotated with variable angular velocity
4 variable torque is produced and the wheel is rotated with variable angular acceleration
Rotational Motion

269301 The following pairs of physical quantities are not analogous to each other in translatory motion and rotational motion

1 force, torque
2 mass, moment of inertia
3 couple, torque
4 linear momentum, angular momentum
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Rotational Motion

269294 During rotation of a body, the position vector is along \(\mathrm{X}\)-axis and force vector is along \(\mathbf{Y}\)-axis, The direction of torque vector is

1 in the \(X-Y\) plane
2 along-ve Z-axis
3 along +ve Z-axis
4 in the \(X-Z\) plane
Rotational Motion

269295 If the direction of position vector\(\vec{r}\) is towards south and direction of force vector \(\vec{F}\) is towards east, then the direction of torque vector \(\tau\) is

1 towards north
2 towards west
3 vertically upward
4 vertically downward
Rotational Motion

269296 Which of the following is wrong?

1 Direction of torque is parallel to axis of rotation
2 Direction of moment of couple is perpendicular to the plane of rotation of body
3 Torque vector is perpendicular to both position vector and force vector
4 The direction of force vector is always perpendicular to both the directions of position vector and torque vector
Rotational Motion

269300 A wheel is free to rotate about its own axis without friction. A ropeis wound around the wheel. If other end of rope is pulled with a constant force, then true statement from the following is

1 constant torque is produced and the wheel is rotated with constant angular velocity
2 constant torque is produced and the wheel is rotated with constant angular acceleration
3 variable torque is produced and the wheel is rotated with variable angular velocity
4 variable torque is produced and the wheel is rotated with variable angular acceleration
Rotational Motion

269301 The following pairs of physical quantities are not analogous to each other in translatory motion and rotational motion

1 force, torque
2 mass, moment of inertia
3 couple, torque
4 linear momentum, angular momentum