Question

*Chapter 2, Practice Problem 2/094 x Incorrect The power winches on the industrial scaffold enable it to be raised or lowered. For rotation in the senses indicated, the scaffold is being raised. If each drum has a diameter of 210 mm and turns at the rate of 40 rev/min, determine the upward velocity v of the scaffold. c

Answer 1

D = 210 mm = T ON 60 44 44 Forst 1.7 N= Hoopo ; velocity (1) V=0.439 (m18) there are two cables, consider them seperate cond Rolre. Cable let total length of cable = L = 4 + 204,-42) + constant differenciate worit time dhe - is = 3;, - 2)2 --- 2 Y LL اله dt [v=- عم cable 2, cable a: L₂ = Y + Yet cat Yu + Śn y = - Ya - length | always remain same La

form and a - 34-9-%) - By V y = -50 - = -5.1 L = Ve = -(TM:80840) ♡ = 0.0879 (mix)