Question

A block and tackle system of pulleys has a velocity ratio $4$.
(i) Draw a labelled diagram of the system indicating clearly the points of application and direction of load and effort.
(ii) What is the value of the mechanical advantage of the given pulley system if it is an ideal pulley system?

Answer 1

(i) The labelled diagram of the system of block and tackle system of pulleys is shown indicating clearly the points of application and direction of load and effort.
(ii) Given : Velocity ratio $(V.R.)=4$, Load $=4T$, Effort $=T$
Mechanical advantage $(M.A.)=\frac{Load}{Effort}$
$=\frac{4T}{T}$
$=4$

Hence, the mechanical advantage of the given pulley system is $4$.