Civil Engineering :: Applied Mechanics
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A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,
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For a simple pendulum, time period for a beat, is
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The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is
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The apparent weight of a man in a moving lift is less than his real weight when it is going down with
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P is the force acting on a body whose mass is m and acceleration is f. The equation P - mf = 0, is known as
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Newtons's Law of Motion is :
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The member which does not carry zero force in the structure shown in below figure, is
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The equation of motion of a particle starting from rest along a straight line is x = t3 - 3l2 + 5. The ratio of the velocities after 5 sec and 3 sec will be
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The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is
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The height at which the end of a rope of length l should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is
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A.
Every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force |
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B.
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 |
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C.
To every action, there is always an equal and opposite reaction |
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D.
All the above. |