Question

determine the K. E of disc of mass 5 kg & radius 25 cm rotating with a speed of 60 rpm about an axis through a point on its circumference and perpendicular to it's plane
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Answer 1

Answer:

281.25

Explanation:

$\frac{1}{2}I$ω^2=KE=0.5(5)(0.0625)(0.5)(60)(60)=281.25