Solution: What is the magnitude of the resultant force vector, R?

Assume the three force vectors intersect at a single point. F1 = 4i + 2j + 5k F2 = –2i + 7j – 3k F3 = 2i – j + 6k What is the magnitude of the resultant force vector, R?

What is the magnitude of the resultant force vector, R?

Problem Statement: ME Board March 1998

Assume the three force vectors intersect at a single point.

F1 = 4i + 2j + 5k

F2 = –2i + 7j – 3k

F3 = 2i – j + 6k

What is the magnitude of the resultant force vector, R?

  • A. 14
  • B. 12
  • C. 13
  • D. 15

Problem Answer:

The magnitude of the resultant force vector, R is 12 units.

Solution:

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