Home › CBSE Class 11 › Physics › Systems of Particles and Rotational Motion › A body with a perfectly definite and unchanging …
A body with a perfectly definite and unchanging shape is called:
ARigid
BFluid
CElastic
DPlastic
Answer & Solution
Correct answer: A. Rigid
1. Extended bodies are simplified by an idealisation.
2. The shape is taken as fixed no matter what forces act.
3. Such a body is called a rigid body.
_Source: NCERT Class 11 Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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: