Angles: Angle of forearm-hand segment relative to horizontal = 0 Angle-of-insertion of M to forearm - 90 Angle of J to X axis = unknown %3D Forces: Forearm-hand segment weight (S) = 17 N Exercise weight (W) = 60 N Muscle force (M) = unknown Joint reaction force (J) at the elbow = unknown %3D Moment arms: External moment arm to Sy (EMAsy) = 0.15 m External moment arm to Wy (EMAWY) = 0.35 m Internal moment arm to My (IMA) = 0.05 m Wy

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Problem
Axis of
rotation
Angles:
Angle of foream-hand segment relative to horizontal = 0
Angle-of-insertion of M to forearm = 90
Angle of J to X axis = unknown
A
Forces:
Forearm-hand segment weight (S) = 17 N
Exercise weight (W) = 60 N
J
M= My
Muscle force (M) = unknown
Joint reaction force (J) at the elbow = unknown
Moment arms:
External moment arm to Sy (EMAS) = 0.15 m
External moment arm to Wy (EMAWY) = 0.35 m
Internal moment arm to My (IMA) = 0.05 m
S - Sy
Sw = Wy
IMA
EMASY
EMAWY
Transcribed Image Text:Problem Axis of rotation Angles: Angle of foream-hand segment relative to horizontal = 0 Angle-of-insertion of M to forearm = 90 Angle of J to X axis = unknown A Forces: Forearm-hand segment weight (S) = 17 N Exercise weight (W) = 60 N J M= My Muscle force (M) = unknown Joint reaction force (J) at the elbow = unknown Moment arms: External moment arm to Sy (EMAS) = 0.15 m External moment arm to Wy (EMAWY) = 0.35 m Internal moment arm to My (IMA) = 0.05 m S - Sy Sw = Wy IMA EMASY EMAWY
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