(b) With a final turn of the spanner, a constant angular acceleration of 38 rad s is applied to the nut for 0.40 s. At the end of this time the nut comes free and drifts away, rotating with its final angular speed. The nut can be modelled as a disk of mass M = 17g and radius R = 15 mm, with a moment of inertia given by I = MR². The nut rotates about an axis through its centre and perpendicular to the plane of the disk. (i) Calculate the angular speed of the nut. (ii) Calculate the rotational kinetic energy of the nut.
(b) With a final turn of the spanner, a constant angular acceleration of 38 rad s is applied to the nut for 0.40 s. At the end of this time the nut comes free and drifts away, rotating with its final angular speed. The nut can be modelled as a disk of mass M = 17g and radius R = 15 mm, with a moment of inertia given by I = MR². The nut rotates about an axis through its centre and perpendicular to the plane of the disk. (i) Calculate the angular speed of the nut. (ii) Calculate the rotational kinetic energy of the nut.
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Do part b and c in detail
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