IIT JEE Questions And Answers :: Circular Motion Centre Of Mass: part2



IIT JEE : Circular Motion Centre Of Mass QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

11.Two wheels, each with four spokes, are mounted one behind the other and aligned such that an observer sees only four spokes. At t =0 minute, one wheel begins to spin at 5 revolutions/ minute and the other at 4 revolutions / minute. Upto t = 1 minute, how many times the observer would see only four spokes ?

1
2
4
8

12.A spherical ball rolls on a table without slipping. Then the fraction of its total energy associated with rotation is

2 / 5
2 / 7
3 / 5
3 / 7

13.A particle is projected so as to just move along a vertical circle. The ratio of the tensions in the string when the particle is at the lowest and highest point on the circle is

1
finite but large
zero
infinite

14.A rigid spherical body is spinning around an axis without any external torque. Due to change in temperature, the volume increases by 1%. The angular speed will approximately

increase by 1%
decrease by 1%
decrease by 0.67%
decrease by 0.33%

15.When a sphere rolls without slipping the ratio of kinetic energy of translation to its total kinetic energy is

1 : 7
1 : 2
1 : 1
5 : 7

More Circular Motion Centre Of Mass QUESTIONS AND ANSWERS available in next pages

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