Question

A block and tackle system is used to lift a load of 100N through 1m by pulling the effort through 3m. Find- 1) velocity ratio and 2) mechanical advantage if weight of the movable pulley is 20N​

Answer 1

Answer:

Here it is 4 pulley system hence total load on tackle(movable part) will be equals to "4T"

and on block(fixed part) total effort will be "T"

hence mechanical advantage(M.E)=

effort

load

=

T

4T

=4