A horizontal lever has negligible weight. A load of 240 N acts 15 cm from the pivot. An effort acts on the opposite side, 60 cm from the pivot. Both forces act downwards. What effort balances the load?
60 N60\ \mathrm{N}60 N
960 N960\ \mathrm{N}960 N
4.0 N4.0\ \mathrm{N}4.0 N
240 N240\ \mathrm{N}240 N