Thread: Physics Program

i need a simple physics formula. F=ma. Please create a program that has you input the mass and the acceleration and return the force. PLEASE i need this by monday. If you can please answer my other thread i need that too. Also add comments to each line of code about what it does with a // and then the cod. Much aprecciated.

Scanner sin = new Scanner(System.in);
double m = sin.nextDouble();
double a = sin.nextDouble();
 
System.out.println("F = " + (m*a) );

thank you but i also need the code for the prompts to enter the numbers for mass and acceleration. thank you in avdance.

You are honestly telling me you can't do that. The information is there, and it would have been the first thing you were taught on your course. I have no problem helping people, but you are showing you have done no work at all, and quite frankly I don't want a bunch of retards walking around with Qualifications they don't know a thing about.

Regards,
Chris

Haha, I love how you ended that with Regards. Anyway, I know how to do it i just want to make sure that i get it right. If i put up the code would you help me with my mistakes?

Ye I don't have a problem with that.
I never mind helping.

Chris

public static [B]Force[/B] readInput()
{
Double a,b,c;
System.out.println("Please input mass.);
a=SavitchIn.readLineDouble();
System.out.println("Please input acceleration");
Force f = new Force(a,b);
return f;
}

How's that? It's a start right.

aww forgot the savitch.in for the second input sorry.

What is savitchIn defined as? (post all your code) that way I can see your Force class too.

You can edit your posts too, and please you code tags [ code ] [ /code ] ( without spaces )

Chris

savitch.In is the java code that can be exchaged for something else. I use Blujay and my computer is pregrammed to accept savitch.In i do not know the exact word. And about the class, that's where i get iffi. Send me a random class and i can make it into the Force class but I'm not sure how to exactly construct a class. I'm really sorry. I have tried but none of the stuff i learn seems to stick.

class Force{
     public Force(double a, double b){
          // some code here
     }
}//end of class

Theres a basic class called force, with a constructor to match your call...

class Force{
     public Force(double a, double b){
          public int mass;
          public int acceleration;//is that right?
     }
}//end of class

You can't have global variables defined within a function

class Force{
     public int mass;
     public int acceleration;//is that right?
     public Force(double a, double b){
 
     }
}//end of class

"you can't have global variables defined within a function"

yeah i totally understood what that meant So is that all the code. I just put that all together and thats my code?

No farm from it, but I'm very confused as to what you are trying to achieve and how you are trying to d it

Chris

i simply want a program in which it prompts you to enter the mass and the acceleration and then it returns the force. what is hard to understand about that?

I think Chris is confused as to how you want to go about achieving this.

i just want him to put the code that is required to do the formula for F=ma. If you can please do it and notate it. This is my final project for programming class and i have just barely been getting by. I know now that I am not meant to be a programmer I want to be an Engineer but I aslo want to pass this class. So please just write the code and write what each line does.

public class Force extends Object
{
private double mass;
private double accel;
private double force;
public [B]Force[/B]
{
    mass=0;
    accel=0;
    force=1;
}
public [B]Force[/B]e(double a, double b)
{
    mass=a;
    accel=b;
    force=1;
}
public static [B]Force[/B] readInput()
{
    double a,b;
  public static Force readInput()
{
Double a,b,c;
System.out.println("Please input mass.);
a=SavitchIn.readLineDouble();
System.out.println("Please input acceleration");
b=SavitchIn.readLineDouble();
Force f = new [B]Force[/B](a,b);
return f;
}
 
public void [B]showData[/B]()
{
    System.out.[B]println[/B]("The force is "+force);
}

Thank You! Is that everything. I have tried studying out of class but the website feel so cluttered and its hard to understand but I'll keep trying. I greatly appreciate this!

That is everything.

Sorry to bother again but when i try to compile it stops me at double a=0 and it says ";" expected so i added the semicolon but it still says the same thing. any ideas.

Class Force
{
Public int CalculateForce(double first, double second)
{
return first * second;
}
Public Static void main(String args[])
{
Force formula=new Force();
Scanner read=new Scanner(System.in)
double a=0;
double b=0;
a=read.nextDouble();
b=read.nextDouble();
system.out.println("The Force is " + formula.CaclulateForce(a,b));
}
}

here ya go. Sorry its late and I forgot the semi-colons.

it still wont work the semi colon is there but it doesnt work