In rock climbing, various rope and pulley systems have been devised to haul up heavy loads, including injured climbers. a rescuer is hauling up an injured climber who weighs 840 n using the rope and pulley system shown in (figure 1). (the ropes in this figure are drawn at various angles for clarity, but you can assume they're all vertical.) what is the tension in rope 1, the rope that the rescuer pulls on?

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

increases it

if they have a finite resultant

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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