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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. 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 1 of 15

2. In the diagram shown below all three rods are of equal length L and equal mass M. The system is rotated such that rod B is the axis. What is the moment of inertia of the system? Question 2 of 15

3. 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 3 of 15

4. Two particles of masses m₁ and m₂ (m₁ > m₂), initially at rest, move towards each other under an inverse square law force of attraction Pick out the correct statement about the center of mass (CM) of the system

Question 4 of 15

5. 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 5 of 15

6. If there is change of angular momentum from 1J to 5 J in 5 second. Then the torque is:

Question 6 of 15

7. 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 7 of 15

8. 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 8 of 15

9. 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 9 of 15

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

Question 10 of 15

11. The motion of planets on the solar system is an example of the conservation of:

Question 11 of 15

12. 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 12 of 15

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

Question 13 of 15

14. 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 14 of 15

15. The direction of the angular velocity vector is along

Question 15 of 15

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