Select the correct statement ?

Related Mcqs:

1. The angular speed of a car while taking a circular turn of radius 100m at 36 km/hour, is_______________?

   A. 0.1 radian/sec
   B. 1 radian/sec
   C. 100 radian/sec
   D. 1000 radian/sec

2. A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is___________________?

   A. n rpm
   B. n/2 rpm
   C. n/4 rpm
   D. 2n rpm

3. One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is___________________?

   A. a simple harmonic motion
   B. a rectilinear motion with constant speed
   C. a damped oscillatory motion
   D. none of the above

4. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at_____________________?

   A. supports
   B. quarter span
   C. mid span
   D. none of the above

5. A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan”1 x, where x is (Assume g = 10 m/sec2)_____________________?

   A. 3/8
   B. 1/2
   C. 9/5
   D. 5/8

6. A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)______________________?

   A. 15 m/sec
   B. 25 m/sec
   C. 40 m/sec
   D. 50 m/sec

7. 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”1 x, where x is______________________?

   A. 3/4
   B. 4/5
   C. 5/3
   D. 3/5

8. The shape of a suspended cable for a uniformly distributed load over it is__________________?

   A. circular
   B. parabolic
   C. catenary
   D. cubic parabola

9. A quantity whose dimensions are M2L2 T3 could be the product of_________________?

   A. force and pressure
   B. mass and power
   C. energy and velocity
   D. force and velocity

10. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?

    A. disc with larger density
    B. disc with smaller density
    C. both discs will have same rotational inertia
    D. none of the above