| | | | | | MCQ Tutorial - Physics->Circular Motion | | | | | | | 1.) A body is allowed to slide on a frictional less track from rest under-gravity. The track ends in a
circular loop of diameter D. What should be the minimum height of the body in terms of D, so that it
may successfully complete the loop?
| | | | Options are: | | | A.) D
| | | B.) (4/5)D
| | | C.) 2D
| | | D.) (5/4)D
| | | | Correct Option: D | | | | | | | | | | | 2.) A body is moving along a circular path with variable speed. It has
| | | | Options are: | | | A.) A radial acceleration
| | | B.) Zero acceleration
| | | C.) A tangential acceleration
| | | D.) Both tangential and radial accelerations
| | | | Correct Option: D | | | | | | | | | | 3.) A body is traveling in a circle at constant speed. It
| | | | Options are: | | | A.) Has no acceleration
| | | B.) Has an inward acceleration
| | | C.) Has constant velocity
| | | D.) Has an outward radial acceleration
| | | | Correct Option: B | | | | | | | | | | 4.) A body of mass 100 gram, tied at the end of a string of length 3 m rotates in a vertical circle and
is just able to complete the circle. If the tension in the string at its lowest point is 3.7 N, then
its angular velocity will be ----------.
(Assume g=9.8 m/s2)
| | | | Options are: | | | A.) 1 rad/s
| | | B.) 3 rad/s
| | | C.) 2 rad/s
| | | D.) 4 rad/s
| | | | Correct Option: B | | | | | | | | | | | 5.) A body of mass 500 gram is rotating in a vertical circle of radius 1 m. What is the difference in
its kinetic energies at the top and the bottom of the circle?
| | | | Options are: | | | A.) 4.9 J
| | | B.) 2.8 J
| | | C.) 19.8 J
| | | D.) 9.8 J
| | | | Correct Option: D | | | | | | | | |
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