Question

TABLE 4.1 Standard man data. The percentage values indicate the fraction of the total body mass. General data Age 30 years Height 173 cm Mass distribution Body mass Motal 70 kg Mass of the trunk 48% Muscle mass 43% Mass of each leg 15% Fat mass 14% Bone mass 10% Mass of the head 7% Mass of each arm 6.5% Brain mass 2.1% Mass of both lungs 1.4% Homeostasis data Surface area 1.85 m2 Body core temperature 310 K Specific heat capacity 3.60 kJ/(kg) Respiratory data Total lung capacity 6.0 L Tidal volume (lungs) 0.5 L Breathing rate 15 breaths/min Oxygen consumption 0.26 L/min Carbon dioxide production 0.208 L/min Cardiovascular data Blood volume 5.1 L Cardiac output 5.0 L/min Systolic blood pressure 16.0 kPa Diastolic blood pressure 10.7 kPa Heart rate 70 beats/min *Skin surface temperatures vary with environmental temperature; see Fig. 9.15.

Answer 1

Whenever a body is motionless it follows the two equations for equilibrium: 1. Net force in all 3 directions=0

2. Net torque about any point =0 where torque=r*F

>t B - The go of the man in drawn selow: It = Since the the ner man in molimless, tongue about any point the net force and will se zero. urmag (wel of roug) 210 22 un maig (71. of toug) * 10 Wollmera in Helmer & 120g & 10 8 12W wa mag =((2 x 6.5 %) of toug) x 10 = PIN w . Whemer (48+12) N Jun E 71

(a) raning Taming toogues of to all the foren about fallrum Di antichockwise antichockange Tongue dure to Fr. Fue lose 12+ 13 Torque due roue el uro: 986 & de Torque due es un unga mo. 16he & articlachana 2te x0.19 clockrise lue o T & T & 2l sinli Torque mer tongue : 3) 2T Je & 1686053 & 0.15 714 & 53 & 484 2 2 => 270.4 (+1+109 June 2.1. (+4 9+1059*** - 1849.5 . Teneim, to 1849.5N (Aus.)

7 net force o . The man in motnless, 7 aniso I Fg binld +30) &B tos (a +30') Tsin 19 i) wer force in vertical dineerim so The components å sin is and I i and Fo in versine direction & Fun (4130) respectively. I fuso " FH twa & Thin 190 & w, & Frin (at 30) - +91 + 184905 & sinis +336 & Fysin tx+30) a) Fosin (x+30) = 7+91r 6024) & 336 = 11001 - i) wer force in horizmene directim - o E FH 3 4005 (a+30) o tin 19° 1848.5 hos 19° 2 1748.7 -2. o Fotos (a +30) a squoring and adding and r (sin (& +30) + int ( a +30)) = 1100.1 & 128.7 te & ſnool + 1748.77 ( sin o no=1) & J 426817.7 - 2065.9 FB & 2065.9. Lans)