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Given that F = 3i - 12j, R = 7i + 5j and N = pi + qj are forces acting on a body, if ...

Given that F = 3i - 12j, R = 7i + 5j and N = pi + qj are forces acting on a body, if the body is in equilibrium. find the values of p and q.
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  • A P=-10, q=7
  • B P=-10, q=-7
  • C P=10, q=- 7
  • D P-10, q=7
Correct Answer: Option C
Explanation:
If the body is in equilibrium then
F + R = N
3i - 12j + 7i + 5j = pi + qj
10i - 7j = pi + qj
p = 10, q = -7

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