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2

Other answers have focused on the force needed to move it, but it's a matter not only of force, but torque. Doubling the length of a weapon while keeping the width and thickness constant doubles both the mass and the lever arm, making the torque four times as large. And less gravity also means you weigh less, so your body is less of a counterweight, and you ...


1

No, this will not work. The mass of the sword will stay the same, even if the weight changes, and so it will be just as hard to build up momentum as in the normal amount of gravity. Once you have finally used a lot of energy to swing the blade around, it will take the same amount of energy to stop it. Your enemy can just avoid that attack easily and off you ...


3

It's not that you can't lift it, it's that you can't maneuver the blade at all. Your average medieval arming sword has a mass of about 1kg. Say you now ramp that up to a 10kg blade. It has the same weight as before, so you can carry it around easily enough, but as soon as you try to swing it, you're going to find that 1) you can't get it up to speed ...


1

The problem in a setting with low gravity isn't the weight of the weapon so much as it is the weight of the user. Imagine if you weighed 1/10th your usual weight, and you're trying to swing a gigantic beast of a weapon. Would you be swinging the weapon around, or would the weapon be swinging you? With a normal weapon (i.e. normal Earth-sized weapons), the ...


7

No. The problem is that kinetic energy is based on mass, no weight. So you may be able to carry these giant swords along no problem, but accelerating them for a strike (or any swordfight maneuver) would still be very tiring and slow.


0

Sure, they make great shields If everything weighs 1/10th as much, yet human strength remains the same (and object density does as well) than that means arrows have a lot further reach alongside all ranged projectiles. And, since ranged projectiles are superior when you're dealing with unarmored infantry, that means the range game is deadlier at farther ...


0

Blue Whales We'll have to handwave a few other things to give them the ability to move on land without instantly dying because a creature of their weight can only survive with the buoyancy water provides, and give them the ability to travel at a decent rate on land, but as long as we're giving them the ability to breathe air, we might as well do a little ...


1

Greenland shark. They are blind because of parasites hanging off their eyes. So they would fight using smell and sound like blind ninjas. They are really big (30 feet) which is good if you are a blind ninja. They live where it is really cold and hardly any people live. https://www.sharksider.com/greenland-shark/ The war will take place in Qaanaaq, ...


3

Like a fish out of water There's a reason for that saying and it holds especially true for your scenario. 50,000 fish out of water for that matter, and what fish do out of water is flounder. If you go too big they'll just be lying there like beached whales. Too small and we won't even notice. The greatest effect your army of fish will have is when they ...


4

No chance. There are fish who could defeat an individual, surprised human in the water. If they could breathe and walk on land, they might be able to defeat an individual, surprised human on land as well. But humanity, as a whole, would have no problem to cope with 50,000 tyrannosaurus rex or 50,000 tigers. Supposedly humanity produced 3 million M2 heavy ...


1

The latest versions of the Instant Legolas are extremely practical and would have utterly changed warfare. It’s now a 7-shot pump-action with an ergonomic handle that decreases the load on the fingers, has a trigger release and a perfectly consistent draw. All of these features mean that an equally trained archer will be able to draw a slightly heavier ...


0

My idea is simple, and you may like it depending on how your setting is. On a planet such as earth the other answers provide good input as to how theoretically to limit firearm's effectiveness. However, lets say you have your combat environment within starships or space stations. Within these confined spaces, multiple problems arise to firearm wielders. ...


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