Probably the Rune battleaxe, though the Warhammer is slightly stronger against plate armor.
The best weapon for training strength is the saradomin sword
A rune 2h is a two-handed weapon. It is the best two-hander to f2p.
In my opinion the best is a rune scimatar
Sword: Rune 2handed sword. Shield: Rune Berserker shield 100.
A Rune 2h is a good weapon for a high lvl strength person on Runescape. A rune scimitar is a perfect weapon for a lvl 46 attack because it is designed for attack.
Rune Short-sword on Accurate, or Rune Longsword on Stab/Controlled. They're about equal in Attack. Rune Longsword will hit higher.
Either buy one for 50k or make one by smithing.
Member - Tzhaar-Ket-Om (2 handed) or Dragon claws. Prob only rune battleaxe Non-Member - Rune 2h (2 handed) Rune Battleaxe (1 handed)
Depends on your level, but id recommend rune + and a rune or better weapon, depends what you killing them for, if it for the staff I'd recommend those and few lobbies.
Train your attack to 40, then buy a Rune Scimitar for FTP, there is no better weapon than a Rune Scimitar.
A Rune Scimitar, mainly because of speed and attack damage rates.
Ranging: Problaby Maple Bow with rune arrows Magic: Fire staff maybe Melee: definetly Rune 2h sword (disadvantage: it is the slowest rune weapon for F2P and you can't wield a shield with it). Instead I would recommend Rune Scimitar with the Rune Kiteshield (regular), (g) (t) or Rune Shield (h1) (h2) (h3) (h4) (h5)
The overall best f2p Runescape weapon is actually a range weapon - Maple Longbow (sighted). It has a range bonus of over 100. The best f2p degradeable weapon is the Gravite 2h. Both are Dungeonneering weapons and need 45 Dungeonneering levels.