13. A load attached to a spring is moving in a circular path. If the speed...

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13. A load attached to a spring is moving in a circular path. If the speed is doubled, the tension in the string would be A. doubled B. halved C. four times as great D. one fourth as much E, the same 14. Banking of roads serves the purpose of A. reducing friction between vehicle wheels and the ground B. increasing friction between vehicle wheels and the ground C. increasing speed of vehicles D. reducing skidding wearing away of the wheels of vehicles E. making a road look awesome 15. A body in circular motion experiences a force which is A. directed towards a fixed point B. proportional to the velocity C. proportional to the radius of the circular path D. proportional to the square of the radius of the path E. proportional to its density 16. A body moving round a circular path of radius, r with constant angular speed o has a linear constant speed of magnitude v. The correct relationship between r, o and v is A. v= o/t B. 0 = v/r C. v =rlo D. o =r/v E.r= 17. The motion of a body is simple harmonic if the A. acceleration is always directed towards a fixed point B. path of motion is a straight line C. acceleration directed towards a fixed point and proportional to its distance from the point. D. acceleration is proportional to the square of the distance from a fixed point. E. mass is proportional to the acceleration 18. A simple pendulum makes 50 oscillations in one minute. What is its period of oscillation? A. 0.02s B. 0.20s C. 0.83s D. 1.20s E. 2.69s 19. The amplitude of the motion of a body performing SHM decreases with time because A. frictional forces dissipate the energy of motion B. the frequency of oscillation varies with time C. the period of oscillation varies with time D. energy is supplied by some external agents E. the mass of the string reduces with time 20. Which of the following would reduce the frequency of oscillation of a simple pendulum? A. increasing the mass of the bob B. decreasing the mass of the bob C. increasing the length of the string D. decreasing the length of the string E. using a white bob 13. A load attached to a spring is moving in a circular path. If the speed is doubled, the tension in the string would be A. doubled B. halved C. four times as great D. one fourth as much E, the same 14. Banking of roads serves the purpose of A. reducing friction between vehicle wheels and the ground B. increasing friction between vehicle wheels and the ground C. increasing speed of vehicles D. reducing skidding wearing away of the wheels of vehicles E. making a road look awesome 15. A body in circular motion experiences a force which is A. directed towards a fixed point B. proportional to the velocity C. proportional to the radius of the circular path D. proportional to the square of the radius of the path E. proportional to its density 16. A body moving round a circular path of radius, r with constant angular speed o has a linear constant speed of magnitude v. The correct relationship between r, o and v is A. v= o/t B. 0 = v/r C. v =rlo D. o =r/v E.r= 17. The motion of a body is simple harmonic if the A. acceleration is always directed towards a fixed point B. path of motion is a straight line C. acceleration directed towards a fixed point and proportional to its distance from the point. D. acceleration is proportional to the square of the distance from a fixed point. E. mass is proportional to the acceleration 18. A simple pendulum makes 50 oscillations in one minute. What is its period of oscillation? A. 0.02s B. 0.20s C. 0.83s D. 1.20s E. 2.69s 19. The amplitude of the motion of a body performing SHM decreases with time because A. frictional forces dissipate the energy of motion B. the frequency of oscillation varies with time C. the period of oscillation varies with time D. energy is supplied by some external agents E. the mass of the string reduces with time 20. Which of the following would reduce the frequency of oscillation of a simple pendulum? A. increasing the mass of the bob B. decreasing the mass of the bob C. increasing the length of the string D. decreasing the length of the string E. using a white bob