Question

Use the diagram of the pulley system to complete the statement.In this pulley system, the pulleys will _____ the mechanical force required to lift the block and will change the _____.

Answer 1

The pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.

The pulley system is a type of simple machine which makes our work easier and faster by overcoming a large load when a small force (effort) is applied to it.

The efficiency of a machine is calculated as follows;

$Eff = \frac{M.A}{V.R} \times 100\%$

where;

• M.A is the mechanical advantage
• V.R is the velocity ratio

$M.A = \frac{load}{effort}$

The velocity ratio of a pulley system = number of pulleys

The velocity ratio of a pulley system increases with increase in the number of pulleys.

Thus, we can conclude that the pulleys will reduce the mechanical force (effort) required to lift the block and will change the mechanical advantage.

Learn more about velocity ratio of pulleys here: brainly.com/question/24785465