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A boy is hanging from a horizontal branc...

A boy is hanging from a horizontal branch of a tree. The tension in the arms will be maximum when the angle between the arms is

A

`0^(@)`

B

`60^(@)`

C

`90^(@)`

D

`120^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`2T cos theta uarr=Mg`

`T=((Mg)/(2cos theta))`
`T_("max")rArr cos " (min)"`
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Knowledge Check

  • A boy of mass 40 kg is hanging from the horizontal branch of a tree. The tension in his arms is minimum when the angle between the arms is:-

    A
    `0^(@)`
    B
    `90^(@)`
    C
    `120^(@)`
    D
    `180^(@)`

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    A
    Primary roots
    B
    Fibrous root
    C
    Prop roots
    D
    Pneumatophores

  • Roots that hold horizontal branches of Banyan tree in the air are

    A
    Thumb roots
    B
    Prop roots
    C
    Stlit roots
    D
    All the above.
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