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A wheel (M = 6.51 kg, R = radius 0.524 m) in the shape of a disk is rotating at fo = 81.

A wheel (M = 6.51 kg, R = radius 0.524 m) in the shape of a disk is rotating at fo = 81.6 rpm when a tool is pressed against the edge of the wheel, slowing it down at a constant rate to ff = 34 rpm in time t = 4.42 seconds. Find:

a) τ, the magnitude of the torque exerted by the tool on the wheel
1 N.m

b) ΔL, the magnitude of the change in the angular momentum of the wheel during the time the wheel was slowing down
2 kg.m2/s

c) at, the magnitude of the tangential acceleration of the wheel as it slowed down
3 m/s2

d) ar, the magnitude of the radial acceleration of a point on the edge of the wheel at the end of the 4.42 seconds
4 m/s2
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Physics-8083750.doc

Answer to 8083750
A wheel (M = 6.51 kg, R = radius 0.524 m) in the shape of a disk is rotating at fo = 81.6 rpm
when a tool is pressed against the edge of the wheel, slowing it down at a constant...

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