Request: Physic configuration template for different objects

[weilies]

Understood thot love2D is using Box2D as physic engine.
i wonder is there any available configuration through the net if anyone aware

Eg. the world is having gravity 9.8F, and if an empty box with 500gram, it will fall down and thouch the floor in 3 secs from 2 meter height
i believe this all might need a lots of trial-and-error before come out a realistic figure
instead of specify the m parameter, mass as 200, gravity as 500 etc, i would rather to check if there any available "planet vs box", "planet vs ballon" simulation so that everyone can reuse it and streamline the development time

Let me know if you guys know any resouces out there

Thanks!

[Robin]

Correct me if I'm wrong, but I thought gravity is specified in Newton and mass in KG anyway.

[weilies]

Correct me if I'm wrong, but I thought gravity is specified in Newton and mass in KG anyway.

Erm... i have throw back the knowledge to my physic teacher.
But if i am going to apply physic to my game, i really need to catch up my physic and maths

more important is, i would like to know any available resource on Box2D setup on simulate our gravity.

Thanks~

[zac352]

9.8F? The temperature for the (stupid and overcomplicated) customary system? What?
Gravity is ~9.81 m/s

[Robin]

9.8F? The temperature for the (stupid and overcomplicated) customary system? What?
Gravity is ~9.81 m/s

Not quite. Gravity (on earth's surface) is about 9.8 N (or kg×m/s²), depending on your exact location. I assumed weilies meant F = 9.8 N.

[bartbes]

Gravity is ~9.81 m/s

m/s².

[kikito]

I believe there are no 'kgs' on gravity.

Even if it's called 'a force', it is usually represented as an acceleration (so it should be measured in m/s²).

If you want to a force, in newtons, then you must call it weight, not gravity.

But I'm nearly as bad in physics as I am on maths, so I could be wrong.

[Robin]

You're right, I mixed up some things.

F = G × m(earth × m(object) / r²
and
F = m × a
so
a = G × m(earth) / r²
and on the surface of earth, r remains almost the same, so you can calculate a, which turns out to be around 9.81 m/s², depending on your exact location (as I said before).

The F I was talking about isn't 9.81 N, it's 9.81 N for every kilogram.

[weilies]

Sorry guys,

i dont mean to open a physic class here but to enquire any available, i mean tested planet simulation
So that a 500g basket ball can bounce like it suppose to be, a 3kg stone will not bounce, and a 1kg wooden box can bounce but not as high as the basket ball

[Robin]

Oh, no. Not as far as I know. But it shouldn't be to hard to figure it out yourself.