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A wheel rotates around a stationary axis...

A wheel rotates around a stationary axis so that the rotation angle `theta` varies with time as `theta=at^(2)` where `a=0.2rad//s^(2)`. Find the magnitude of net acceleration of the point A at the rim at the moment `t=2.5s` if the linear velocity of the point A at this moment is `v=0.65m//s`.

A

`0. 7 m//sec^(2)`

B

`0.6 m//sec^(2)`

C

`0.5 m//sec^(2)`

D

`0.4 m//sec^(2)`

Text Solution

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The correct Answer is:
A
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