程序找到两个物体之间的引力

万有引力简介

我们知道万有引力是普遍存在的。根据牛顿万有引力定律，所有物体都通过万有引力相互吸引。根据该定律，万有引力与两个物体的质量直接相关，与它们中心之间距离的平方成反比。在移除比例符号后，我们添加 G，即万有引力常数。这可以简化为以下等式：
${\displaystyle F=G\left ( \frac {m_{1}m_{2}}{r^2} \right )}$
F = 两个物体之间的万有引力，单位为牛顿（N）
G=万有引力常数（ $6.67*10^{-11} N-m^2/kg^2$ )
m1 和 m2 = 两个物体的质量（Kg）
r = 以米（m）为单位的物体之间的距离，从它们的质心开始测量。

例子：

Input: m1 = 20000000 kg
       m2 = 4000000 kg
       r = 15 m
Output : The Gravitational Force is:  23.73 N

Input: m1 = 5000000 kg
       m2 = 900000 kg
       r = 30 m
Output : The Gravitational Force is:  0.33 N

方法很简单。我们将只使用引言中提到的公式。

C++

// C++ code to find Gravitational Force
#include 
using namespace std;
 
float round(float F)
{
    float value = (int)(F * 100 + .5);
    return (float)value / 100;
}
 
float force(double m1, double m2, double r)
{
    float G;
    G = 6.67 / 1e11;
    float F;
    F = (G * m1 * m2) / (r * r);
     
    // Rounding to two digits after decimal
    return round(F);
}
 
// Driver code
int main()
{
    float m1, m2, r;
    m1 = 5000000;
    m2 = 900000;
    r = 30;
     
    cout << "The Gravitational Fource is: "
         << force(m1, m2, r) << "N";
     
    return 0;
}
 
// This code is contributed by parthagarwal1962000

Python3

# Python3 code to find Gravitational Force
def force(m1, m2, r):
    G = 6.673*(10**-11)
    F = (G*m1*m2)/(r**2)
 
    # Rounding to two digits after decimal
    return round(F, 2)
 
# Driver Code
m1 = 5000000
m2 = 900000
r = 30
print("The Gravitational Force is: ", force(m1, m2, r), "N")

Javascript

// JavaScript code to find Gravitational Force
function round (F)
{
    var value = (F * 100 + .5);
     
    return value / 100;
    
}
 
function force(m1, m2, r)
{
    var G;
     G = 6.67 / 1e11;
    var F;
    F = (G * m1 * m2) / (r * r);
     
         
    // Rounding to two digits after decimal
    return round(F);
     
}
 
// Driver code
    var m1, m2, r;
    m1 = 5000000;
    m2 = 900000;
    r = 30;
     
    document.write("The Gravitational Fource is: " + force(m1, m2, r) +"N");
     
// This code is contributed by shivanisinghss2110

输出：

The Gravitational Force is:  0.33 N