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1) Forces passing through a common point are known as _____ a. collinear forces b. co-planer forces c. concurrent forces d. none of the above
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2) Varignon's theorem is used to find ________ a. direction of resultant force b. location of resultant force c. magnitude of resultant force d. nature of resultant force
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3) Couple is formed due to two ______ a. like, parallel and non-collinear forces of same magnitude b. like, perpendicular and collinear forces of different magnitude c. unlike, parallel and non-collinear forces of same magnitude d. unlike, perpendicular and non-collinear forces of different magnitude
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4) Which of the following laminas do not have centroid at its geometrical centre? a. Circle b. Equilateral triangle c. Right angled triangle d. None of the above
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5) If a material has no uniform density throughout the body, then the position of centroid and center of mass are ________ a. identical b. not identical c. independent upon the density d. unpredictable
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6) The rate of change of __________ with respect to time is called as jerk. a. acceleration b. density c. displacement d. volume
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7) During unidirectional motion, the displacement and distance traveled by a particle with uniform acceleration is ______ a. different b. same c. variable d. none of the above
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8) A particle moving with respect to fixed frame of reference is called as __________ a. absolute motion b. relative motion c. rectilinear motion d. none of the above
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9) A boat sails across a river with a velocity of 10 km/hr. If resultant boat velocity is 14 km/hr, then what is the velocity of river water? a. 17.20 km/hr b. 10 km/hr c. 9.79 km/hr d. 4.88 km/hr
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10) According to which law, every action has an equal and opposite reaction? a. Newton's first law b. Newton's second law c. Newton's third law d. None of the above
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11) A man of 60 kg moves in a lift of constant velocity 5 m/s. What is the reactive force acting on the man by the elevator? a. 888 N b. 588 N c. 288 N d. Zero
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12) When motion is _______, the normal component of acceleration is zero. a. curvilinear b. rotational c. rectilinear d. translation
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13) In projectile motion, which of the following factors affecting the actual path of motion are neglected? a. Curvature of earth b. Rotation of earth c. Wind resistance d. All of the above
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14) Which of the following is represented by the area under force-displacement diagram? a. Impulse b. Momentum c. Power d. Work done
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15) According to work energy principle, a particle of mass m when subjected to unbalanced force system, the work done during displacement by all forces is equal to change in ____________ during displacement. a. gravitational energy b. kinetic energy c. mechanical energy d. potential energy
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16) The force for which work done is independent of _______ is called as conservative force. a. distance b. path c. time d. all of the above
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17) A ball is dropped on a horizontal surface from a height of 15 m. What will be the rebounding height of the ball after striking the surface? (coefficient of restitution = 0.8) a. 9.6 m b. 6.5 m c. 5.6 m d. Insufficient data
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18) Which of the following laws derive impulse moment principle? a. Newton's 3rd law b. Newton's 2nd law c. Newton's 1st law d. All of the above
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19) If a body in equilibrium condition is acted by three forces at three points, then the line of action of these forces should be _____ a. always concurrent b. always parallel c. concurrent or parallel d. none of the above
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20) According to Lami's theorem, a body is in equilibrium condition if each force among three ____________ are proportional to sine angle between other two. a. coplanar, collinear forces b. collinear, non-concurrent forces c. coplanar, non-concurrent forces d. coplanar, concurrent forces
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