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

Answer 1

5 pulleys means 4 lines lifting the load ... a 4:1 mechanical advantage

ideally , the effort is ... 450N / 4

with 75% efficiency ... 450N / (4 * .75)

Answer 2

Help

Answer 3

Amoah

Answer 4

Answer