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Mechanical Engineering - Engineering Mechanics

Exercise : Engineering Mechanics - Section 5
46.
The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is
50mm
75mm
87.5mm
125mm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In order to completely specify angular displacement by a vector, it must fix
direction of the axis of rotation
magnitude of angular displacement
sense of angular displacement
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Which of the following statement is correct in connection with projectiles?
A path, traced by a projectile in the space, is known as trajectory.
The velocity with which a projectile is projected, is known as the velocity of projection.
The angle, with the horizontal, at which a projectile is projected is known as angle of projection.
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The acceleration of a body sliding down an inclined surface is
g sin θ
g cos θ
g tan θ
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If a body is acted upon by a number of coplaner non-concurrent forces, it may
rotate about itself without moving
move in any one direction rotating about itself
be completely at rest
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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