1.

A point mass moves along a circle of radius `R` with a constant angular acceleration `alpha`. How much time is needed after motion begins for the radial acceleration of the point mass to be equal to its tangential acceleration ?A. `sqrt((1)/(alpha))`B. `sqrt((R)/(alpha))`C. `sqrt((2)/(alpha))`D. `sqrt((1)/(2alpha))`

Answer» Correct Answer - A


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