A 3m uniform plank of weight 203 N rests on two joists as shown. The coefficient of static friction between the joists and the plank is 0.40. (a) Determine the magnitude of the horizontal force P required to move the plank. (b) Solve part a assuming that a single nail driven into joist A prevents motion of the plank along joist A.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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4.110 - A 3m uniform plank of weight 203 N rests on two joists as shown.
The coefficient of static friction between the joists and the plank is 0.40.

(a) Determine the magnitude of the horizontal force P
required to move the plank.

(b) Solve part a assuming that a single
nail driven into joist A prevents motion of the plank along joist A.

0,3 m
-0,9 m--
-1,8 m-
B
Transcribed Image Text:0,3 m -0,9 m-- -1,8 m- B
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