Sanding Discs
Sanding Discs
.A sanding disc with rotational inertia 1.2 X 10-3 kgm2 is attached to an elastic drill whose motor delivers a?
.A sanding disc with rotational inertia 1.2 X 10-3 kgm2 is attached to an elastic drill whose motor delivers a torque of magnitude 16 N-m about the central axis of the disc. About that axis and with the torque applied for 33msec. what is the magnitude of the (a) angular momentum (b) angular velocity of the disc.
By Tau = Iα
=>16 = 1.2 x 10^-3 x α
=>α = 13333.33 rad/sec^2
By ω(final) = ω(initial) + αt
=>ω(f) = 0 + 13333.33 x 33 x 10^-3
=>ω(f) = 440 rad/sec [answer for (b)]
By L = Iω
=>L = 1.2 x 10^-3 x 440
=>L = 0.53 N-m-s
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Micro Mini Disc Sander - DIY Dremel Sanding Disc
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