Question

A 6.76 kg disk makes 4.00 rev starting from rest. Calculate the radius of the disk if it has
a rotational kinetic energy of 9.89 J and an angular acceleration of 0.98 rad/s?.
(a) 0.345 m
(b) 0.864 m
(c) 0.216 m
(d) 0.122 m​

Answer 1

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