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#translational motion

2 public questions tagged with this topic.

Moment of Inertia and Radius of Gyration

What characterizes pure translational motion of a rigid body?

In pure translational motion, all particles of the rigid body have the same velocity at any given instant, with no rotation involved. As per NCERT, applying relevant law/formula with correct units and sign convention leads to All particles have the same linear velocity. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.

Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.

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Vector Product and Rotational Kinematics

What is the primary difference between translational and rotational motion of a rigid body?

In translational motion, all particles move with the same linear velocity, while in rotational motion, particles move in circular paths with the same angular velocity about a fixed axis. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Translational motion involves all particles moving with the same velocity, while rotational motion involves the same angular velocity. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.

Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.

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