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- Equivalent Force System and Free Body Diagram

This question was previously asked in

MPSC AE Pre 2019 Official Paper

- ∑F
_{x}= 0, ∑F_{y}= 0, ∑F_{z}= 0 - ∑F
_{x}= 0, ∑M_{x}= 0, ∑M_{y}= 0 - ∑F
_{x}= 0, ∑M_{y}= 0, ∑M_{z}= 0 - ∑F
_{x}= 0, ∑F_{y}= 0, ∑M_{z}= 0

Option 3 : ∑F_{x} = 0, ∑M_{y} = 0, ∑M_{z} = 0

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ST 1: Fluid Mechanics

1749

20 Questions
50 Marks
20 Mins

**Explanation:**

When the forces are parallel to the x-axis then for equilibrium,

∑F_{x} = 0 and the position vector from the Y and Z – axis remain parallel to the force vector.

Similarly, ∑M_{y} = 0 and ∑M_{z }= 0

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