Solution: Find the magnitude of the resultant force vector, R?

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

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

Problem Statement: ME Board October 1996

Assume the three force vectors intersect at a single point.

F1 = i + 3j + 4k

F2 = 2i + 7j – k

F3 = -i + 4j + 2k

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

  • A. 15
  • B. 13.23
  • C. 14.73
  • D. 16.16

Problem Answer:

The magnitude of the resultant force vector, R is 15 units.

Solution:

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