Question

Four pulley system
If its efficiency is 80% calculate the effort​

Answer 1

Answer:

Correct option is

A

125N

Velocity Ratio=3

Efficiency=80/100

Mechanical Advantage=efficiency×Velocity ratio

⇒

100

80

×3

⇒2.4

M.A=

effort

load

2.4=

Effort

300N

⇒Effort=

2.4

300N

=125N