Problem

A small particle of mass 0.36 g rests on a horizontal turntable at a distance 25 cm from the axis of spindle. The turntable is accelerated at a rate of

\alpha = \frac{1}{3} \text{ rad s}^{-2}

. The frictional force that the table exerts on the particle 2 s after the startup is a.

40 \mu\text{N}

30 \mu\text{N}

50 \mu\text{N}

60 \mu\text{N}

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