A pulley system with a mechanical advantage of 15 is used to lift a 1750 N piano to a third floor balcony that is 7 m above the ground. What applied force must the movers use? How much rope will the movers pull in?

The  force is

Explanation:

From the question we are told that

     The  mechanical advantage is  

     The load is

      The  height is  

Generally mechanical advantage is mathematically represented as

Here E is the force that must be applied to move the piano

=>    

=>    

=>    

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop