Question

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Write very short definition of fixed and movable pulley with 3 example​

Answer 1

Answer:

A fixed pulley is one in which the drum is secured to a single spot. While the force required to lift or move an object is no different than if you were lifting it by hand, the fixed pulley allows you to change the direction of the force needed.

For example, when attached to a bucket pulling water from a well, a fixed pulled allows you to pull laterally to raise the bucket in a more convenient manner than if you were hauling a bucket of water up vertically, hand over hand. The bucket of water will still feel like the same weight, but lifting is more convenient.

A movable pulley is one in which drum moves as you are moving the load. There is no change in the direction of force that you need to apply, but the load will "feel" lighter than it is. If you were hauling a heavy hay bale up into the loft of a barn.

for example, a movable pulley would make the load feel much lighter, although the direction you are pulling would be the same.