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Q: The forces whose lines of action do not lie in one plane and they do not meet at one point are known as ______.
  • A. Non- coplanar and concurrent forces
  • B. Coplanar and Non- concurrent forces
  • C. Non-coplanar and Non-concurrent forces
  • D. Coplanar and concurrent forces
Correct Answer: Option C - Non-coplanar and Non-concurrent forces–The forces which do not meet at one point and their lines of action do not lie on the same plane are called non-coplanar non-concurrent forces.
C. Non-coplanar and Non-concurrent forces–The forces which do not meet at one point and their lines of action do not lie on the same plane are called non-coplanar non-concurrent forces.

Explanations:

Non-coplanar and Non-concurrent forces–The forces which do not meet at one point and their lines of action do not lie on the same plane are called non-coplanar non-concurrent forces.