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A ring of radius 'r' and mass per unit l...

A ring of radius 'r' and mass per unit length 'm' rotates with an angular velocity `'omega'` in free space then the tension is :

A

(a)zero

B

(b)`(1)/(2)momega^(2)r^(2)`

C

(c)`momega^(2)r^(2)`

D

(d)`mromega^(2)`

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • A thin uniform rod of mass .M. and length .L. rotates with constant angular velocity .omega. about perpendicular axis passing through its centre. Two bodies each of mass (M)/(3) are attached to its two ends. What is its angular velocity?

    A
    `(2)/(3)omega`
    B
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    C
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    D
    `(1)/(2)omega`

  • A thin uniform circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to the plane with n angular velocity omega another disc of one forth mass and same dimension is gently placed over it coaxially, the angular speed of the composite disc will be ............

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  • A thin circular ring M and radius r is rotating about its axis with a constant angular velocity omega . Four objects each of mass m are kept gently to the opposite ends of two perpendicular diameters of the ring. The angular velocity of the ring will be...........

    A
    `((M-4m)omega)/(M+4m)`
    B
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    C
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    D
    `((M+4m)omega)/(M)`

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