Question

A rigid body is a body in which

• A. the distance between any two given points remains constant till an external forces exerted on it.
• B. the distance between any two given points changes with time regardless of external forces exerted on it.
• C. the distance between any two given points remains constant in time regardless of external forces exerted on it.
• D. the distance between any two given points changes with time until external forces exerted on it.

Answer 1

The correct option is C the distance between any two given points remains constant in time regardless of external forces exerted on it.

A body is said to be a rigid body if the body remains in its original shape even under the influence of external force. We can also say that if distance between two points of the body does not change with time regardless of external forces exerted on it, then the body is said to be a rigid body.