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| Teaching Since: | May 2017 |
| Last Sign in: | 409 Weeks Ago |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A block of mass m = 20 kg rests on a rough plane as shown. Knowing that a = 25° and µs = 0.20, determine the magnitude and direction of the smallest force P required (a) to start the block up the plane, (b) to prevent the block from moving down the plane.
Â

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