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When a disc rotates with uniform angular...

When a disc rotates with uniform angular velocity, which of the following is not true ?

A

The sense of rotation remains same

B

The orientation of the axis of rotations remains same

C

The speed of rotation is non - aero and remains

D

The angular acceleration is non - zero and remains same

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The correct Answer is:
D
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - IV
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  2. A particle of mass m is moving in yz - plane with a uniform veloci...

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  3. When a disc rotates with uniform angular velocity, which of the follow...

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  4. A uniform square palte has a small piece Q of an irregular shape...

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  5. In the above problem , the CM of the plate is now in the followin...

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  6. The density of a non-uniform rod of length 1m is given by rho (x) = a ...

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  7. A Merry -go-round, made of a ring-like plarfrom of radius R and mass M...

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  8. Choose the correct alternative :

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  9. Figure shows two identical particles 1 and 2 , each of mass m ...

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  10. The net external torque on a system of particles about an axis is zero...

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  11. A uniform cube of mass m and side a is placed on a frictionless ...

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  12. A uniform uniform sphere of mass m and radius R is placed on a ro...

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  13. A T shaped object with dimesions shown in the figure , is lying a...

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  14. A circular ring of mass 6kg and radius a is placed such that its cente...

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  15. In the figure d shown a hole of radius 2 cm is made in a semicir...

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  16. The figure shows the positions and velocities of two particles . ...

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  17. A rod of length 3m and its mass par unit length is directly propo...

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  18. A wheel is rotating about an axis through its centre at 720 rp...

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  19. A particle of mass m describes a circle of radius r . The centripetal ...

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  20. A particle moves in a circular path of radius R with an angular veloci...

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