Question

A block and tackle system has a V.R of 4.if a load of 100N is raised by using a force of 50N.find the mechanical advantage and efficient.
Answered by GPT 3.5
The mechanical advantage of a block and tackle system is equal to the number of supporting ropes. In this case, the V.R (velocity ratio) is 4, so there are 4 supporting ropes.

Mechanical Advantage = V.R = 4

Efficiency can be calculated using the formula:

Efficiency = (MA / V.R) x 100%
Efficiency = (4 / 4) x 100%
Efficiency = 100%

Therefore, the mechanical advantage is 4 and the efficiency is 100%.