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A car starts moving from rest along the ...

A car starts moving from rest along the circumference of a horizontal circle of radius `R =49` m with a constant tangential acceleration `a_(t)=0.62 ms^(-2)`. The coefficient of sliding friction is `mu = 0.2`. What distancem will the car describe without sliding ?
[Hint : The car will start sliding when the frictional force attains its upper bound]

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