Briefly summarize how the pulleys worked with respect to changes in effort force and effort distance compared with resistance force and resistance distance what are the advantages of using pulleys what do you think would happen to the mechanical advantage if you needed a third movable pulley

A pulley is a wheel with two raised edges so that a rope or a string will run along the wheel. The effort force is the one where there is a weight attached to it and enables the pulley to work while the effort distance is the distance between the pulley and the weight attached.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.