You and your friends are building a treehouse, and you need a machine to get a heavy load of wood from the ground to the top of the tree. you set up a pulley system that allows you to pull down on the rope to lift the wood. what type of pulley system was this and how did it make work easier? question 9 options: fixed pulley by changing the direction of input force. movable pulley by decreasing input force but not the direction.

Machines are systems that are built to carry out a certain function or work. These are classified as: Simple and Compound Machines.

Simple machines are simple tools used to accomplish a certain task. These include lever, pulley, inclined plane atc. In contrast compound machines are a combination of simple machines.

In the given scenario, a pulley system was used to carry the wood from the bottom to the tree top. This is a movable pulley system which is directly attached to the load and works by decreasing the input force but not the direction.

the answer is 303.15 or 303

the ratio of the conjugate base to the acid required to attain the desired ph.