Question

A movable pulley reduces the effort used to pulk the lode. true or false​

Answer 1

Answer:

➡ TRUE..

Using multiple pulleys decreases the amount of force necessary to move an object by increasing the amount of rope used to raise the object. The mechanical advantage (MA) of a pulley system is equal to the number of ropes supporting the movable load...

Answer 2

Answer:

your answer is true A movable pulley reduces the effort used to pulk the lode.

Step-by-step explanation:

The movable pulley reduces the effort required to pull a mass by factor of 2 × number of movable pulleys. Consider a simple example of single fixed and movable pulley.

In case I of fixed pulley the effort will be same as of load being lifted as tension in rope will be same across pulley, hence mechanical advantage will be 1.

Feffort=Fload

In case II of movable pulley the effort will be half of that load being lifted as the forces on mass less pulley should balance, mechanical advantage will be 2.

2Feffort=Fload⇒Feffort=Fload/2

Movable pulley is used as force multiplier, correct answer is 1st option.

hope it helps you