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A stone tied to the end of string 1m lon...

A stone tied to the end of string 1m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44s, What is the magnitude and direction of acceleration of the ston is ?

A

`pi^(2)ms^(–2)` and direction along the tangent to the circle

B

`pi^(2)ms^(–2)` and direction along the radius towards the centre

C

`pi^(2)//4 ms^(–2)` and direction along the radius towards the centre

D

`pi^(2)ms^(–2)` and direction along the radius away from the centre

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A stone tied at the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 25 revolutions in 14 s, what is the magnitude of acceleration of the stone ?

    A
    `90 m s^(-2)`
    B
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    A
    `493 cm//s`
    B
    `720 cm//s`
    C
    `860 cm//s`
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    `990 cm//s`

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    A
    `20 ms^(-2)`
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