Home › NEET UG › Physics › Systems of Particles and Rotational Motion › Per NCERT §6.9 eqn 6.34, the moment of inertia o…
Per NCERT §6.9 eqn 6.34, the moment of inertia of a system of particles about an axis is which?
AI = Σ m_i r_i
BI = Σ m_i v_i²
CI = Σ m_i / r_i²
DI = Σ m_i r_i²
Answer & Solution
Correct answer: D. I = Σ m_i r_i²
NCERT §6.9 eqn 6.34: I = Σ m_i r_i², where r_i is the perpendicular distance of mass m_i from the axis.
Related questions
The radius of gyration relates the moment of inertia to the body's:The kinetic energy of a rolling body is the sum of translation and:Rotation about a fixed axis is directly analogous to:The parallel axes theorem adds to the centre of mass value the mass times:In the moment of inertia formula, r is the distance from the axis that is:The centre of gravity is where the total gravitational torque is:Rotational equilibrium requires the total external torque to be:Translational equilibrium requires the total external force to be: