Question 51 : In the system international, the unit of torque is?
1. Newton-second.
2. Newton-meter.
3. Newton/meter².
4. Newton/meter.
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Question 52 : The torque is the vector product of two vectors force and displacement and is a vector at?
1. 90° to the plane of the force and displacement.
2. 0° to the plane of the force and displacement.
3. 360° to the plane of the force and displacement.
4. 180° to the plane of the force and displacement.
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Question 53 : A body possesses linear velocity and linear momentum when it is in?
1. Translatory motion.
2. Rotatory motion.
3. Spin motion
4. Orbital motion.
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Question 54 : If the vector sum the torques acting on it is zero, the body is said to be in?
1. Rotational equilibrium.
2. Translatory equilibrium.
3. Equilibrium.
4. Static equilibrium
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Question 55 : The second condition of equilibrium states that, "a body will be in equilibrium, if the vector sum of all the torques acting on it is?"
1. One
2. None of these.
3. Zero
4. Maximum
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Question 56 : Buildings and bridges are an example of?
1. Dynamic equilibrium.
2. Static equilibrium.
3. Kinetic equilibrium.
4. None of these.
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Question 57 : "A body will be in equilibrium if the resultant of all the forces acting on it is zero". This is called as?
1. Third condition of equilibrium
2. First condition of equilibrium.
3. Second condition of equilibrium
4. Fourth condition of equilibrium.
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Question 58 : Jumping of a paratrooper from an helicopter is an example of?
1. Dynamic equilibrium.
2. None of these
3. Static equilibrium.
4. Equilibrium
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Question 59 : Clockwise rotation is taken as?
1. Negative
2. Positive
3. Neutral
4. Infinity
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Question 60 : A point of a body or a system of particles which moves as if the total mass of the body or the system of particles were concentrated there and all the applied forces were acting at that point is called as?
1. Centre of gravity.
2. Centre of circle.
3. Centre of rotation
4. Centre of mass.
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