Question

A pulley system has velocity ratio of 5 and 20% friction loss draw the system and find MA and load capacity if 200N force is applied

Answer 1

Answer:

Correct option is

B

90%

Explanation:

As we know that efficiency (η) =

velocity ratio

mechanical advantage

Mechanical Advantage(M.A) =

effort

load

=

1000

4500

= 4.5

Velocity Ratio(V.R) = No. of pulleys used = 5

Therefore efficiency η =

5

4.5

×100% = 90%