Worksheets16/12/25 AE: EM:3,4
Total questions: 10
Worksheet time: 5mins
A rigid body is said to be in complete equilibrium when:
ΣF = 0 only
ΣM = 0 only
ΣF = 0 and ΣM = 0
Forces are concurrent
Which law is used to determine the resultant of two forces acting at a point?
Newton’s first law
Parallelogram law
Varignon’s theorem
Lami’s theorem
Varignon’s theorem is related to:
Resultant force
Resultant displacement
Moment of forces
Acceleration
Lami’s theorem is applicable only when:
Two forces act at a point
Three concurrent forces keep a body in equilibrium
Forces are parallel
Forces are collinear
If ΣFx = 0 and ΣFy = 0, the body is in:
Rotational equilibrium only
Translational equilibrium only
Complete equilibrium
Dynamic equilibrium
A force system whose resultant is zero but moment is not zero is called:
Coplanar force system
Concurrent force system
Couple
Collinear force system
Which of the following is a sliding vector?
Velocity
Moment
Force
Acceleration
Assertion: A body can be in equilibrium even if forces are not equal.
Reason: Forces may balance each other vectorially.
Both Assertion and Reason are true and Reason explains Assertion
Both true, but Reason does not explain Assertion
Assertion true, Reason false
Assertion false, Reason true
S1: Moment of a couple depends on the reference point.
S2: Perpendicular distance changes with the point chosen.
S1 is true, and S2 is false
S1 is false, and S2 is true
S1 is true, and S2 is true
S1 is false, and S2 is fa;se
Two equal and opposite forces of 40 N act at a distance of 0.3 m apart. Find the moment of the couple.