Worksheets06/01/26-Civilwar-Overseer GRADE 1-EM-Moments of force¢roid
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The centroid of a plane figure is defined as the point where
a)
Total weight of the body acts
b)
Mass of the body is concentrated
c)
Entire area may be assumed to be concentrated
d)
Maximum stress occurs
2.
Which of the following does NOT affect the location of the centroid of a plane figure?
a)
Shape
b)
Size
c)
Material density
d)
Geometry
3.
The SI unit of moment of force is
a)
Newton
b)
Newton/metre
c)
Newton-metre
d)
Watt
4.
Varignon’s theorem states that the moment of a force about a point is equal to
a)
Resultant force multiplied by distance
b)
Difference of force components
c)
Algebraic sum of moments of its components
d)
Sum of forces acting
5.
The principle of moments is mainly used to determine
a)
Linear velocity
b)
Rotational equilibrium
c)
Acceleration
d)
Power transmission
6.
Which of the following is a necessary condition for a body to remain in rotational equilibrium?
a)
Sum of forces equals zero
b)
Clockwise moment greater than anticlockwise moment
c)
Sum of clockwise moments equals sum of anticlockwise moments
d)
Resultant force is maximum
7.
A couple produces
a)
Linear motion only
b)
Translation without rotation
c)
Rotation without translation
d)
Both translation and rotation
8.
The moment of a couple is independent of
a)
Force magnitude
b)
Distance between forces
c)
Point about which it is taken
d)
Direction of rotation
9.
Two equal and opposite forces of 40 N form a couple separated by 0.15 m. Find the moment of the couple.
a)
3 Nm
b)
6 Nm
c)
8 Nm
d)
12 Nm
10.
A force produces a moment of 60 Nm at a distance of 3 m. The magnitude of the force is
a)
10 N
b)
15 N
c)
20 N
d)
30 N
100 %
