1
MECHANICS OF MATERIALS EXAM LATEST UPDATE -2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
develop between two bodies not in contact
- gravity
- EM
Support Reactions
surface forces at supports or points between bodies
Equilibrium
Balancing of forces and moments on a body to prevent translation/rotation
Normal Force
Acts perpendicular to area (push/pull)
Shear Force
Lies in the plane of the cut section (sliding)
Torsional moment
acts about an axis perpendicular to the plane (twisting)
Bending Moment
acts about the axis lying in the plane of the area (bending)
Two assumptions when analyzing stress
Continuity and Cohesiveness (no breaks)
Isotropic and homogeneous
, 2
Stress
the intensity of the internal force acting on a specific plane (area) passing through
a point
Tensile and Compressive stress
pulling and pushing
Homogeneous
same physical and mechanical properties throughout volume
Isotropic
same properties in all directions (Steel)
Anisotropic
Different properties in different directions (wood)
If a force passes through a centroid then there is no...
moment
Effects of taper on stress
stress distribution is different for more than 15% tapering
Reason for allowable stress design (ASD)
Fabrication errors
unknown variations
accidental loads
corrosion, decay or weathering
variability in mechanical properties
Factor of Safety Values
1 for aircraft to reduce weight
MECHANICS OF MATERIALS EXAM LATEST UPDATE -2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
develop between two bodies not in contact
- gravity
- EM
Support Reactions
surface forces at supports or points between bodies
Equilibrium
Balancing of forces and moments on a body to prevent translation/rotation
Normal Force
Acts perpendicular to area (push/pull)
Shear Force
Lies in the plane of the cut section (sliding)
Torsional moment
acts about an axis perpendicular to the plane (twisting)
Bending Moment
acts about the axis lying in the plane of the area (bending)
Two assumptions when analyzing stress
Continuity and Cohesiveness (no breaks)
Isotropic and homogeneous
, 2
Stress
the intensity of the internal force acting on a specific plane (area) passing through
a point
Tensile and Compressive stress
pulling and pushing
Homogeneous
same physical and mechanical properties throughout volume
Isotropic
same properties in all directions (Steel)
Anisotropic
Different properties in different directions (wood)
If a force passes through a centroid then there is no...
moment
Effects of taper on stress
stress distribution is different for more than 15% tapering
Reason for allowable stress design (ASD)
Fabrication errors
unknown variations
accidental loads
corrosion, decay or weathering
variability in mechanical properties
Factor of Safety Values
1 for aircraft to reduce weight
