Chapel Garden

PT245 HIP ABDUCTOR MUSCLE FORCE PROBLEM

Page 6

Find M

Hip Abductor Muscle Force Picture
  1. Form right triangle MDA with MA as hypotenuse
  2. If angle BAM = 70 degrees then angle DMA must equal 70 degrees
  3. Use sine relationship (opposite side / hypotenuse) to find M
  4. Sine 70 degrees = Rotary Component (DA) / hypotenuse (M)
  5. Hypotenuse (M) = Rotary Component (DA) / sine 70 degrees
  6. M = 300 / .9397

M = 319.25lbs

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