IIT JEE Questions And Answers :: Circular Motion Centre Of Mass: part1



IIT JEE : Circular Motion Centre Of Mass QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2014 examinations :

1.A wheel is at rest. Its angular velocity increases uniformly and becomes 80 rad/s after 5s. The total angular displacement is:

800 rad
400 rad
200 rad
100 rad

2.A national roadway bridge over a canal is in the form of an arc of a circle of radius 49 m. What is the maximum speed with which a car can move without leaving the ground at the highest point? (Take g = 9.8 m/second square)

19.6 m/s
40 m/s
22 m/s
None of these

3.A car of 1400 kg is moving on a circular path of radius 30 m with a speed of 40 km/h. When the driver applies the brakes and the car continues to move along the circular path, what is the maximum deceleration possible if the tyres are limited to a total horizontal friction of 10.6 kN?

10 m/second square
6.36 m/second square
4 m/second square
None of these

4.A heavy stone hanging from a massless string of length 15 m is projected horizontally with speed 147 m/s. The speed of the particle at the point where the tension in the string equals the weight of the particle is:

10 m/s
7 m/s
12 m/s
none of these

5.A car travels with a uniform velocity in north direction. It goes over a piece of mud which sticks to the tyre, the particles of the mud, as it leaves the ground are thrown:

vertically downward
vertically upward
horizontally to north
horizontally to south

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

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