Question

draw a free body diagram

In the figure a 52 kg rock climber is in a lie-back climb along a fissure, with hands pulling on one side of the fissure and feet pressed against the opposite side. The fissure has width W = 0.30 m, and the center of mass of the climber is a horizontal distance d = 0.50 m from the fissure. The coefficient of static friction between hands and rock is M1 = 0.45, and between boots and rock it is H2 = 1.15. The climber adjusts the vertical distance h between hands and feet until the identical) pull by the hands and push by the feet is the least that keeps him from slipping down the fissure. (He is on the verge of sliding.) (a) What is the least horizontal pull by the hands and push by the feet that will keep the climber stable? (b) What is the value of h? (a) Number Units (b) Number Units

Answer 1

fiffe-ingo - Fri- mg Mitre 521908 0.45 +1.1s = 1318.50 (6) Torque about the pt. where his feet come in contact with the truck: my(dow) – fwn Fw, hao -) - mg (dow)-4, Friw Fai (52x918) (O.Su 70:30) - Oius (318-5) 10.3) 3185 = 11.145 in)