Gravity
3 posters
CMPC :: Computing :: Programming :: C++
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Gravity
by Admin Wed Dec 23, 2009 5:37 am
Create a program that finds the gravitational force acted upon between two given masses and a given distance.
AND I POSTED THIS IN THE C++ FORUM FOR A REASON
AND I POSTED THIS IN THE C++ FORUM FOR A REASON
Last edited by Admin on Wed Dec 23, 2009 6:29 am; edited 1 time in total
Admin- Pirate King
- Posts : 559
Re: Gravity
by Admin Wed Dec 23, 2009 6:25 am
now i tried this myself. and i got the thing written up but i keep getting a damn error. so .... 
code is in spoiler
code is in spoiler
- Spoiler:
- Code:
#include <iostream>
#include <cmath>
using namespace std;
double compute(double m1, double m2, double d)
{
static double G =6.67428*(double pow(10,-11));
double force=((G*m1*m2)/(double pow(d,2)));/*you can just return this thing instead of
declaring a whole new variable for this line,
but this is just for making the code more legible.*/
return force;
}
int main()
{
double mass1,mass2;
double distance;
cout<<"This is the gravitational force calculating program. All input must be in SI units!\n";
cout<<"Please input two masses in the following lines. Remember they must be in kilograms.\n\n";
cout<<"First Mass: ";
cin>>mass1;
cout<<"\nSecond Mass: ";
cin>>mass2;
cout<<"\n\nOK so far so good, now we need the distance between the centers of the two masses."<<endl;
cout<<"\nDistance: ";
cin>>distance;
cout<<"Time to work some programming magic here..... answer: "<<compute(mass1,mass2,distance);
cin.get();
return 0;
}
Admin- Pirate King
- Posts : 559
Re: Gravity
by Admin Wed Dec 23, 2009 6:33 am
hmm i got an interesting idea. if i don't use the math library it compiles fine. wtf?
well here it is
edit: wait this doesn't work yet.... gimme a sec...
edit: ok after tweaking around i found that if you enter a double into the DISTANCE variable, it screws up the program. .... wtf.?
well here it is
edit: wait this doesn't work yet....
gimme a sec...edit: ok after tweaking around i found that if you enter a double into the DISTANCE variable, it screws up the program. .... wtf.?
- Spoiler:
- Code:
#include <iostream>
using namespace std;
double compute(double m1, double m2, double d)
{
static double G =.0000000000667428;
double force=((G*m1*m2)/d*d);/*you can just return this thing instead of
declaring a whole new variable for this line,
but this is just for making the code more legible.*/
return force;
}
int main()
{
double mass1,mass2;
double distance;
cout<<"This is the gravitational force calculating program. All input must be in SI units!\n";
cout<<"Please input two masses in the following lines. Remember they must be in kilograms.\n\n";
cout<<"First Mass: ";
cin>>mass1;
cout<<"\nSecond Mass: ";
cin>>mass2;
cout<<"\n\nOK so far so good, now we need the distance between the centers of the two masses."<<endl;
cout<<"\nDistance: ";
cin>>distance;
cout<<"Time to work some programming magic here..... answer: "<<compute(mass1,mass2,distance);
cin.get();
return 0;
}
Admin- Pirate King
- Posts : 559
Re: Gravity
by Paul Wed Dec 23, 2009 8:33 pm
- Code:
double compute(double m1, double m2, double d)
{
static double G =.0000000000667428;
double force=( G*( (m1*m2)/(d*d) ) );
return force;
}
try this. . .
I'm not checking the code, I'm just correcting one BLATANT error
Paul- Pickaxe
- Posts : 611
Re: Gravity
by Admin Wed Dec 23, 2009 9:10 pm
when i enter a double for the value of distance, the console just disappears i've had this problem before your correction and still afterwards.
i've had this problem before your correction and still afterwards.
Admin- Pirate King
- Posts : 559
Re: Gravity
by Paul Thu Dec 24, 2009 10:56 pm
- Code:
double compute(double m1, double m2, double d)
{
static double G =0.0000000000667428;
double force=( G*( (m1*m2)/(d*d) ) );
return force;
}
Paul- Pickaxe
- Posts : 611
Re: Gravity
by Lunsfordium Tue Aug 10, 2010 5:04 am
i love how you guys just post code willy-nilly without explanations
Lunsfordium- [Blankie]
- Posts : 194
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