Question

Please give both answers.

Assignment Score: 100/900 Resources Hint Check Answer Question 2 of 9 > Using a simple pulley and rope system, a crewman on an Arctic expedition is trying to lower a crate of mass mi = 6.04 kg to the bottom frictionless of a steep ravine of height H = 26.5 m. The crewman of mass m2 = 50.3 kg is walking while holding the rope, being careful to lower the crate at a constant speed of vo = 1.50 m/s. Unfortunately, when the crate reaches a point h = 14.7 m above the ground, the crewman steps on a slick patch of ice and slips. The crate immediately accelerates toward the ground, dragging the hapless crewman across the ice and figure not to scale toward the edge of the cliff. Assuming the ice is perfectly slick, so that there is no friction between the crewman and the ice once he slips and falls down, at what speed u will the crate hit the ground? Assume also that the rope is long enough to allow the crate to hit the ground before the crewman slides over the side of the cliff, and that the pulley is frictionless. v1 = m/s At what speed us will the crewman hit the bottom of the ravine? Assume no air resistance, U2 =

Answer 1

mi = 6:04 kg me 2012 by 4:26.5m. y = 1.50 ml h=14.7 m mza VVVVVUJU as the acceleration of block and man will be same T= mzat ma- mig-T mya = mig-ma a Im a=1 6.04 1503+6.04 9.8 m2 a = 1.050 62123 neft le=1. osa med? as h=14.7m U=losomes alor1 m2 from 3rd egn. al motion, & taah. a = (1.50) ² + 20 borld (147) 162 = (2+25+ 30.8994 Iufs 2 = 33. 1494 mita Tu 5.76 mps

as & ie horisontal component of velocity of lawman, roman When we het the Mentreal Compe ground a tegh torka 9 X 260 Rey Ug = (579.4) mish ų = √ 133-1494) + (5194) mfs. ų = 23.5062692 mls ų = 23,51 hefs I