Question

A block and tackle system of pulley's a velocity ratio 4.
(i) Draw a labelled diagram of the system indicating clearly the points of
application and
directions of a 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

Explanation:

(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.)=

Effort

Load

=

T

4T

=4

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

Answer 2

Explanation:

(ii)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.

(iii) Given : Velocity ratio (V.R.)=4, Load =4T, Effort =T

Mechanical advantage (M.A.)= load/effort

4T/T

4

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