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Civil Engineering - Applied Mechanics

Exercise : Applied Mechanics - Section 2
11.
The resultant of the forces acting on a body will be zero if the body
rotates
moves with variable velocity in a straight line
moves along a curved path
does not move at all.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be
0.5 m/sec
1.5 m/sec
2.5 m/sec
3.5 m/sec
4.5 m/sec.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A pilot flies a small plane in a vertical loop of radius r. At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g, the speed of the plane at the top of its trajectory would be
zero
infinite
gr
2gr.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
The distance of the c.g. of a semi-circular arc of radius r from its diameter along the radius of symmetry, is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
A Seconds pendulum executes
0.5 beat per second
1.0 beat per second
2.0 beats per second
2.5 beats per second
3 beats per second.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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