If three coplanar, concurrent forces are acting at a point are in equilibrium, of which two of them are collinear, then what is the magnitude of third force which is acting at an angle B with other two forces?

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Basics of Engineering
Civil Engineering
If three c...

Q. If three coplanar, concurrent forces are acting at a point are in equilibrium, of which two of them are collinear, then what is the magnitude of third force which is acting at an angle B with other two forces?

zero

algebraic sum of other two forces

vector sum of other two forces

none of the above

Solution:

The ?vector sum? of any two of any forces in coplanar system will have ?magnitude? equal to the third force. Because at equilibrium the vector sum of all vectors involved is zero.

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Q. If three coplanar, concurrent forces are acting at a point are in equilibrium, of which two of them are collinear, then what is the magnitude of third force which is acting at an angle B with other two forces?

Solution:

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Q. If three coplanar, concurrent forces are acting at a point are in equilibrium, of which two of them are collinear, then what is the magnitude of third force which is acting at an angle B with other two forces?

Solution:

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