Question
Asked Dec 17, 2019
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The leg and cast in Figure
P4.40 weigh 220 N (w). Deter-
mine the weight wz and the angle
a needed so that no force is
exerted on the hip joint by the leg
plus the cast.
7
110 N 40%
Figure P4.40
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The leg and cast in Figure P4.40 weigh 220 N (w). Deter- mine the weight wz and the angle a needed so that no force is exerted on the hip joint by the leg plus the cast. 7 110 N 40% Figure P4.40

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Expert Answer

Step 1

From the diagram given in the question,

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w,cos a = (110N)cos40° =84.264N. (I)

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Step 2

And

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w,sin a = (220N)-(110N) sin40° =149.29N. (II)

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Step 3

Divide equation (II) usi...

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w,sin a _149.29N w,cos a 84.264N tan a =1.772 a =tan (1.772) = 60.0°

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