A single movable pulley was used to lift a block weighting 12 kilograms through a distance of 12 metres.calculate machanical advantage.
M.A =LOAD/EFFORT
there is no mechanical advantage with a single pulley
To calculate the mechanical advantage of a single movable pulley, you need to know the weight being lifted and the distance it is moved. In this case, you have the weight of the block (12 kilograms) and the distance it is lifted (12 meters).
The mechanical advantage of a single movable pulley is always 2, regardless of the weight being lifted or the distance it is moved. This is because the single movable pulley reduces the effort required to lift the weight by half.
To understand why the mechanical advantage is 2, let's break down the mechanics of a single movable pulley. In this setup, the pulley is attached to a fixed point above and the load (weight) is attached to the other end of the rope that passes through the pulley. When you pull the rope down, the pulley moves up, lifting the load. As you pull down, the effort you exert is divided by two due to the pulley's action, effectively reducing the effort required.
Therefore, despite the weight of the block or the distance it is lifted, the mechanical advantage of a single movable pulley remains constant at 2.