What is a rigid body?

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(B) rigid body is defined as an ideal body in which the distance between any two particles remains constant,regardless of the external force applied t

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$A$ body with a definite and fixed shape and size,where the distance between any two particles remains constant regardless of the external force applied.

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(B) rigid body is defined as an ideal body in which the distance between any two particles remains constant,regardless of the external force applied to it.In a rigid body,the relative positions of its constituent particles do not change under the action of external forces.While no real body is perfectly rigid,many objects (like a steel ball or a wooden block) can be treated as rigid bodies for the purpose of mechanics.

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