Question
what is the answer for question 5 ? the rope climbing competition
C Search 5.11pt] In a rope climbing competition, a 66.4 kg athlete climbs a vertical distance of 4.88 m in 8.40 s. What minimum power output was used to accomplish this feat? Not yet correct, tries 3/5 6.[1pt] A 2102 kg block of granite is pulled up an incline that has an angle of inclination of 24.0 0 with a constant speed of2 between the block and the incline is 0.270. How much power must be supplied by the winch? line that has an angle of inclination of 24.0 o with a constant speed of 2.,62 m/s by a steam winch (se Figure). The coefficient of kinetic Hint: There are several ways to solve this problem. You'll have to remember the old Ch. 4 techniques for dealing with "objects on an slope": in fact a force diagram will be "needed cahle. Remember, the work done by the cable requires that you find the FORCE of the cable (which is another name for the tension in the cable) No more tries. in thr
Explanation / Answer
weight of the man = 66.4 x 9.8 = 650.72 N
distance = 4.8 m
Work done = mgh = 650.72 x 4.8 = 3123.456 J or Nm
Power = Work / time = 3123.456 / 8.4 = 371.84 W
