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Passage - I : A uniform rod of mass m ...

Passage - I :
A uniform rod of mass m pivoted smoothly at O is resting against a vertical wall of a moving wedge. The acceleration of the wedge is a, then

The normal reaction offered by the vertical wall on the rod is

A

`m(g-a)sintheta`

B

`m/2(gcottheta-a)`

C

`m(gsintheta-acostheta)`

D

`m(gsintheta+acostheta)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Passage - I : A uniform rod of mass m pivoted smoothly at O is resting against a vertical wall of a moving wedge. The acceleration of the wedge is a, then The reaction offered by pivot on the rod along horizontal direction is

    A
    `m(g+a)sintheta`
    B
    `m/2(gcottheta+a)`
    C
    `m(gsintheta+acostheta)`
    D
    `m(gsintheta-acostheta)`

  • Passage - I : A uniform rod of mass m pivoted smoothly at O is resting against a vertical wall of a moving wedge. The acceleration of the wedge is a, then The minimum acceleration 'a' at which the rod looses contact with the vertical wall is

    A
    `gcostheta`
    B
    g
    C
    `gcottheta`
    D
    `g tantheta`

  • A man of mass 40 kg is at rest between the walls as shown in the figure. If 'mu' between the man and the walls is 0.8, find the normal reactions exerted by the walls on the man. (g=10ms^(-2))

    A
    100 N
    B
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    C
    80 N
    D
    50 N

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