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# Center of Mass, Rigid Bodies & Rotational Motion Test Online MCQs

 Test Name Center of Mass, Rigid Bodies & Rotational Motion MCQs Test Subject Physics Test Type MCQs Total Question 15 Total Marks 30 Total Time 15 Mints Test Help For Physics Subject Test Prep. Engineering Test Prep. Medical Test Prep. All Admissions Test. All Jobs Test prep.

Center of Mass, Rigid Bodies & Rotational Motion multiple choice questions are available over here for the preparation of all the tests of physics subjects, admission test, engineering and medical test. Get Center of Mass, Rigid Bodies & Rotational Motion Test Online MCQs below.

## Physics

1. Four point masses, each of value m, are placed at the corners of a square ABCD of side l. The moment of inertia of this system about an axis passing through A and parallel to BD is

Question 1 of 15

2. A circular disc rotating with frequency f₀ = 1.3 rev/sec comes to a stop in 30 seconds. The approximate angular acceleration is:

Question 2 of 15

3. If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform velocity of 1 m/s along a straight line on a horizontal floor, the kinetic energy is:

Question 3 of 15

4. A wire of mass m and length l is bent in the form of a circular ring, the moment of inertia of the ring about its axis is

Question 4 of 15

5. The moment of inertia of a rod about an axis through its center and perpendicular to it is 1/12 ML² (where M is the mass and L, the length of the rod). The rod is bent in the middle so that the two halts make an angle of 60°. The moment of inertia of the bent rod about the same axis would be:

Question 5 of 15

6. If the equation for the displacement of a particle moving on a circular path is given as θ = 2t³ + 0.5, where θ is in radians and t is in second. Then the angular velocity of the particle after two second will be:

Question 6 of 15

7. The angular speed of a body changes from ω₁ to ω₂ without applying a torque but due to changes in moment of inertia. The ratio of radii of gyration in two cases is

Question 7 of 15

8. The direction of the angular velocity vector along:

Question 8 of 15

9. A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through it center. At some instant of time a viscous fluid of mass m is dropped at the center and is allowed to spread out and finally fall. The angular velocity during this period:

Question 9 of 15

10. The direction of the angular velocity vector is along

Question 10 of 15

11. The moment of inertia of a regular circular disc of mass 0.4 kg and radius 100 cm about an axis perpendicular to the plane of the disc and passing through its center is:

Question 11 of 15

12. A solid sphere is rolling on a frictionless surface, shown in figure with a translational velocity v m/s. If it is to climb the inclined surface then v should be: Question 12 of 15

13. Which of the following is true about the angular momentum of a cylinder down a slope without slipping

Question 13 of 15

14. If a street light of mass M is suspended from the end of a uniform rod of length L in different possible patterns as shown in figure, then: Question 14 of 15

15. A constant torque of 31.4 Nm is exerted on a pivoted wheel. If the angular acceleration of the wheel is 4π rad/sec², then the moment of inertia will be:

Question 15 of 15

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