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Civil Engineering - Applied Mechanics

Exercise : Applied Mechanics - Section 4
16.
In simple harmonic motion, acceleration of a particle is proportional to
rate of change of velocity
displacement
velocity
direction
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if
floor is smooth and the wall is rough
floor is rough and the wall is smooth
floor and wall both are smooth surfaces
floor and wall both are rough surfaces.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is
1.5
5
25
314
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
To double the period of oscillation of a simple pendulum
the mass of its bob should be doubled
the mass of its bob should be quadrupled
its lenght should be quadrupled
its length should be doubled.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
For a particle moving with a simple harrmonic motion, the frequency is
directly proportional to periodic time
inversely proportional to periodic time
inversely proportional to its angular velocity
directly proportional to its angular velocity
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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