The device shown is used to straighten bowed decking boards just prior to final nailing to the joists. There is a lower bracket (not shown) at O which fixes the part OA to a joist, so that the pivot A may be considered fixed. For a given force P exerted perpendicular to the handle ABC as shown, determine the corresponding normal force N applied to the bent board near point B if the dimensions are r = 501 mm, s = 179 mm, a = 2.7° and B = 15°. Neglect friction ▪ | 0 0 P The moment of P about A is: Во α° The moment of F about A is: A B C Pk N.mm O s mm r mm Taking the postive x-axis as the direction from B towards A, the angle the force at B from the decking board into the device Fis: Fok N.mm As a result the relationship between the magnitude of the two forces is: F PN
The device shown is used to straighten bowed decking boards just prior to final nailing to the joists. There is a lower bracket (not shown) at O which fixes the part OA to a joist, so that the pivot A may be considered fixed. For a given force P exerted perpendicular to the handle ABC as shown, determine the corresponding normal force N applied to the bent board near point B if the dimensions are r = 501 mm, s = 179 mm, a = 2.7° and B = 15°. Neglect friction ▪ | 0 0 P The moment of P about A is: Во α° The moment of F about A is: A B C Pk N.mm O s mm r mm Taking the postive x-axis as the direction from B towards A, the angle the force at B from the decking board into the device Fis: Fok N.mm As a result the relationship between the magnitude of the two forces is: F PN
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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