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41
If the given forces P1, P2, P3 and P4 are such that the force polygon does not close, then the system will
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Answer: Option B
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42
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan-1x, where x is
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Answer: Option D
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43
A ladder of weight 'w' rests against a smooth vertical wall and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being $$\frac{1}{4}$$. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan-1x, where x is
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Answer: Option B
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44
The length of a Second's pendulum, is
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Answer: Option B
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45
For a simple pendulum, the period of one oscillation is
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Answer: Option C
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46
The locus of the instantaneous centre of a moving rigid body, is
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Answer: Option C
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47
The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is
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Answer: Option C
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48
Engineer's units of force, is
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Answer: Option A
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49
If y is force and x is velocity, then dimensions of $$\frac{{{{\text{d}}^2}{\text{y}}}}{{{\text{d}}{{\text{x}}^2}}}$$ are
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Answer: Option B
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50
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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Answer: Option D
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