Exercise: Engineering Mechanics

Questions for: Engineering Mechanics

The moment of inertia of a square of side a about its diagonal is
A:
a2/8
B:
a3/12
C:
a4/12
D:
a4/16
Answer: C
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The minimum force required to slide a body of weight W on a rough horizontal plane is
A:
W sin θ
B:
W cos θ
C:
W tan θ
D:
none of these
Answer: C
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In ideal machines, mechanical advantage is __________ velocity ratio.
A:
equal to
B:
less than
C:
greater than
D:
Answer: A
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The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as
A:
Newton's first law of motion
B:
Newton's second law of motion
C:
Newton's third law of motion
D:
none of these
Answer: B
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Which of the following is a scalar quantity?
A:
Force
B:
Speed
C:
Velocity
D:
Acceleration
Answer: B
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