Skip to content
Login Register

#particle

2 public questions tagged with this topic.

Moment of Inertia and Radius of Gyration

A 3kg particle has a velocity v\=2i^m/s at position r\=4j^m. What is the magnitude of its angular momentum about the ori

L = r×p = r×(mv) = |i^j^k^040200| = −8k^kg m2/s. Magnitude = 8kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 8 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.

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

View Details
Conservation of Angular Momentum

A 4kg particle moves with velocity v\=5j^m/s at r\=−3i^m. What is the magnitude of its angular momentum about the origin

L = r×p = |i^j^k^−300050| = k^((−3)×5−0×0) = −15k^kg m2/s. Magnitude = 15kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 15 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.

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

View Details