| 1. | The principle of transmissibility of forces states that, when a force acts upon a body, its effect ? | |
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same at every point on its line of action
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different at different points on its line of action
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minimum, if it acts at the centre of gravity of the body
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maximum, if it acts at the centre of gravity of the body
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Report Question| 2. | A smooth cylinder lying on a .......... is in neutral equilibrium ? | |
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curved surface
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convex surface
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horizontal surface
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any surface
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| 3. | The centre of gravity of a quadrant of a circle lies along its cent al radius (r) at a distance of ? | |
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0.5 r
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0.6r
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0.7r
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0.8r
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| 4. | Which of the following statement is correct ? | |
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The algebraic sum of the forces, constituting the couple is zero
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The algebraic sum of the forces, constituting the couple, about any point is the same.
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A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense
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all of the above
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| 5. | If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion ? | |
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P+ma=0
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P-m.a=0
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Pxm.a=0
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P/m.a=0
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| 6. | If a body is acted upon by a number of coplaner non-concurrent forces, it may ? | |
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rotate about itself without moving
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move in any one direction rotating about itself
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be completely at rest
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all of these
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| 7. | A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act ? | |
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towards the wall at its upper and
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away from the wall at its upper end
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downward at its upper end
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upward at its upper end
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| 8. | Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is........than that passing through its C.G. and parallel to the base ? | |
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nine times
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six times
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four times
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two times
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| 9. | The total momentum of a system of masses (i.e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called ? | |
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Newton's first law of motion
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Newton's second law of motion
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principle of conservation of energy
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principle of conservation of momentum D
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| 10. | A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is ? | |
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5
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10
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20
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40
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