find the mechanical advantage and hence the effort if the efficiency is 75%.a pulley system having 5 pulley is used to raise a 450N load

Question

find the  mechanical  advantage and hence  the effort if the  efficiency is 75%.a pulley  system  having  5 pulley is used  to raise  a 450N load

R_scott · Accepted Answer

5 pulleys means a 5:1 mechanical advantage effort = (load / mechanical advantage) / efficiency