In figure draw a tackle to lift the load by applying the force in the download direction. 
In figure draw a tackle to lift the load by applying the force in the download direction. 

(a) Mark in the diagram the direction of load L and effort E.

(b) If the load is raised by 1 m, through what distance will the effort move?

(c) State how many strands of tackle are supporting the load.

(d) What is the mechanical advantage of the system?

Answer –

(a)

(b) When the load is raised by 1 m, the effort moves through a distance = 1 × 5 = 5 m

(c) Total strands of tackle supporting the load are five in number.

(d) The mechanical advantage of the system is given by the following expression

M.A. = Load / Effort = 5T / T

Therefore, M.A. = 5