If five forces are acting on the single particle and having an angle o – McqOptions

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1.	If five forces are acting on the single particle and having an angle of 72 between each and are collinear, then:
A.	The net force acting on the body is zero and it is stable
B.	The net force acting on the body is horizontal
C.	The net force acting on the body is vertical
D.	The net force acting on the body is at an angle of 45
Answer» B. The net force acting on the body is horizontal

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We need to apply vector math sometimes in the calculation of the stability of equilibrium configurations. So the coordinate of the Force vector AB is A (2, 0, 2) and B (-2, 3.46, 3). It has a magnitude of 750N. Which is the best Cartesian representation of the vector AB?
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If the body is in stability of equilibrium configuration, but it having a rotational curled ray shown in the free body diagram then:
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