6 public questions tagged with this topic.
For a rigid body rotating about a fixed axis, all particles have the same angular velocity, regardless of their distance from the axis, as it’s a property of the body’s rotation as a whole.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
Particles on the axis of rotation have a perpendicular distance r = 0 from the axis, so their linear velocity v = ωr = 0, meaning they remain stationary. As per NCERT, applying relevant law/formula with correct units and sign convention leads to They remain stationary. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
The angular velocity vector is directed along the axis of rotation, following the right-hand rule (curl fingers in the direction of rotation, thumb points along the vector). As per NCERT, applying relevant law/formula with correct units and sign convention leads to Along the axis of rotation. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
For a rigid body rotating about a fixed axis, all particles have the same angular velocity, which is a property of the body’s rotation and remains constant across all points.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
For a symmetric rigid body rotating about a fixed axis (a symmetry axis), the perpendicular components of angular momentum cancel out due to symmetry, leaving L = Iω aligned with the axis.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
In pure rotational motion about a fixed axis, every particle moves in a circular path in a plane perpendicular to the axis, with the center of the circle on the axis.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
