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  4. A particle moves in a circle of radius 25 cm at two revolutions per second. The acceleration of the particle is (in m / s 2 ),

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Q. A particle moves in a circle of radius $25\, cm$ at two revolutions per second. The acceleration of the particle is (in $m / s ^{2}$ ),

Motion in a Plane

Solution:

$a=r \omega^{2}$
$a=\frac{25}{100}(2 \times 2 \pi)^{2}$
$a=4 \pi^{2} m / s ^{2}$