WorksheetsRevision problems – 10 FEP Semester 2 Mechanics
Total questions: 16
Worksheet time: 10mins
The formula to calculate the weight force of an object is:
Weight force = mass × gravity
Weight force = mass ÷ gravity
Weight force = mass + gravity
Weight force = mass - gravity
Equilibrium for an object at rest means that all the forces acting on it are:
balanced.
the same
non-existent
large
A vector has:
Magnitude and altitude
Motion and time
Speed and velocity
Magnitude and direction
Calculate the horizontal component of the resultant force, FR, 287 N which has an angle of 22 degrees.
269 N
266 N
107.5 N
170.5 N
Calculate the vertical component of the resultant force FR of 207 N which is at an angle of 88 degrees.
7.2 N
202.1 N
206.9 N
702 N
A force of 150 N acts at an angle of 60 degrees above the horizontal. What is the horizontal component of this force?
75 N
130 N
120 N
150 N
The magnitude of the resultant force and the equilibrant force are
the same value
the opposite value
a similar value
What does the area under the stress-strain curve measure?
A material's ductility
A material's toughness
A material's weakness
A material's brittleness
What is the ultimate tensile strength for this material?
60 MPa
58 MPa
66 MPa
59 MPa
What is the fracture strength of this material?
58 MPa
62 MPa
66 MPa
50 MPa
Which material is most brittle?
UHMWPE
Stainless steel
bone
ceramic
Which material is the toughest?
Stainless steel 316
Bone
Ceramic
UHMWPE
A metal bar has a cross-sectional area of 0.0004 m². A tensile force of 6,000 N is applied to it. What is the stress in the bar?
0.15 MPa
15 MPa
150 MPa
1500 MPa
A plastic rod has an original length of 500 mm. When stretched, it extends by 1 mm. What is the strain in the rod?
0.2
0.02
0.0002
0.002
A steel wire with a cross-sectional area of 0.0002 m² is subjected to a tensile force of 4,000 N. What is the stress in the wire?
0.2 MPa
2 MPa
200 MPa
20 MPa
If a force of 100 N acts at an angle of 45 degrees to the horizontal, what is the vertical component of this force?
70.7 N
141.4 N
50 N
100 N
