please answer
write true if false write the word or phrase that make it false

________4. A single fixed pulley multiplies the force exerted.
________5. A load can be moved most easily when the fulcrum of the lever located nearest to the effort.
________6. A screw is an inclined plane wrapped around a cylinder.
________7. A lever multiplies effort
________8. Machines must be properly and carefully used to avoid accidents and minor injuries.​