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A wheel has a speed of 1200 revolution p...

A wheel has a speed of `1200` revolution per minute and is made to slow down at a rate of `4 rad//s^(2)`. The number of revolutions it makes before coming to rest is

A

143

B

272

C

314

D

722

Text Solution

Verified by Experts

The correct Answer is:
C
`omega = (2piN)/t , theta = (omega_(2)^(2) - omega_(1)^(2))/(2alpha)`
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - II (H.W)
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  2. A heavy wheel of radius 20 cm and weight 10 kg is to be dragged over a...

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  4. Point a rod b ( l = 2m) is moved upwards against a wall with veloci...

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  6. A uniform meter scale of mass 1kg is placed on table such that a part ...

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  8. Two circular rings each of mass M and radius R are attached to eac...

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  9. If I(1) is moment of inertia of a thin rod about an axis perpendicular...

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  11. Two small spheres of mass 5kg and 15 kg are joined by a rod of length ...

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  13. The moment of inertia of ring about an axis passing through its diamet...

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  14. The moment of inertia of a solid cylinder about its natural axis is I....

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  15. A thin rod of mass 6 m and length 6L is bent into regular hexagon. The...

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  16. Three solid spheres each of mass P and radius Q are arranged as ...

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  17. Three point masses m(1),m(2),m(3) are placed at three corners of an ...

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  19. Three rods each of mass m and length L are joined to form an equila...

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