cameroon gce A level 2022 building construction applied mechanics 1
cameroon gce A level 2022 building construction applied mechanics 1
A point subjected to many forces is said to be in
equilibrium if
A All the forces are parallel and opposite.
B The algebraic sum of moment of the
forces about a point is equal to zero
C All the forces are perpendicular and
opposite.
D The algebraic sum of moment of the
forces about a point is different from
zero.
1. 6.
is
i <
0
A 30KN
B 51.96KN
C 60KN
D 34.64KN
2. The main bar of a column in a reinforced concrete
structure should have a minimum diameter of
A 12mm
B 6mm
C 1Omm
D 8mm State the factor that determines the coefficient of
friction between two objects.
A Effect of applied forces on one of the
object.
B Effect of applied forces of the two objects
C Nature of surfaces.
D Area of contact
7.
3. On the cantilever beam below, the maximum
bending moment is
9f)daN
o= l 20riaN
I
A mechanical body that does not regain its
original shape after the removal of the applied
load that has produced deformation is said to be
A Elastic
B Plastic
C Rigid
D Flexible.
B 810daNm
C 120daNm
D 90daNm
4. The coefficient of statics friction of a body sliding on
another one is 0.2, calculate the equivalent force if the
horizontal force that causes it to just start moving is 30N
A 30N
B 150N
C 6N
D 60N
Four rivets having a diameter of 20mm is subjected
to a shear force of 600N. Calculate the shear stress
on the rivets.
A
3/271
B
• 6/71
C
3/8 71
9.
5. In the figure below, the reaction at A is D
8/3 71
8N/
10. Concrete slabs were lifted up at once to a height of
6m. The weight of a slab is 50kg, calculate the
work done in lifting the slabs, taking the value of
the acceleration due to gravity to be 10ni/s‘
A 30KNm
B 3000Nm
C 30Nm
D 300KNm
