ch11-p030 - 30. (a) The acceleration vector is obtained by...

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30. (a) The acceleration vector is obtained by dividing the force vector by the (scalar) mass: a = F / m = (3.00 m/s 2 )i ^ – (4.00 m/s 2 )j ^ + (2.00 m/s 2 )k ^ . (b) Use of Eq. 11-18 leads directly to L = (42.0 kg . m 2 /s)i ^ + (24.0 kg . m 2 /s)j ^ + (60.0 kg . m 2 /s)k ^ . (c) Similarly, the torque is rF τ G GG = (–8.00 N . m)i ^ – (26.0 N . m)j ^ – (40.0 N . m)k ^ . (d) We note (using the Pythagorean theorem) that the magnitude of the velocity vector is
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