Question

这是我在VPython中写的代码到目前为止，我是Vpython的新手，我不是那种经验丰富的python，所以请给我一些松懈，我得到的错误是：

Traceback (most recent call last):   File "C:\Users\Makka Pakka\Documents\Planetary Orbits.py", line 28
    SUVAT(EarthInitialV,Distance)   File "C:\Users\Makka Pakka\Documents\Planetary Orbits.py", line 4, in SUVAT
    EarthFinalV.x = sqrt((A.x) + 2*Acceleration*(B.x)) TypeError: unsupported operand type(s) for +: 'float' and 'vector'

from visual import *

def SUVAT(A,B):
        EarthFinalV.x = sqrt((A.x) + 2*Acceleration*(B.x))
        EarthFinalV.y = sqrt((A.y) + 2*Acceleration*(B.y))
        EarthFinalV.z = sqrt((A.z) + 2*Acceleration*(B.z))

GravitationalConstant = 10

Sun = sphere(pos=(0,0,0), radius=10, color=color.red,
             make_trail=True)

Earth = sphere(pos=(50,0,0), radius=5, color=color.yellow,
               make_trail=True)

Sun.mass = 50
Earth.mass = 10

EarthInitialV = vector(5,5,5)
EarthFinalV = vector(0,0,0)

while 1 != 2:
    Distance = Earth.pos - Sun.pos

    GravitationalEquation = (GravitationalConstant*Sun.mass*Earth.mass)*Distance / mag(Distance)**3
    Acceleration = GravitationalEquation/Earth.mass

    SUVAT(EarthInitialV,Distance)

    Earth.x.pos = Earth.x.pos + EarthFinalV.x
    Earth.y.pos = Earth.y.pos + EarthFinalV.y
    Earth.z.pos = Earth.z.pos + EarthFinalV.z

Answer 1

除了物理方程式不正确之外，错误是由添加数字（组件）和向量（3个组件）引起的。要使其工作，您需要将该函数重写为

def SUVAT(A,B):
    global EarthFinalV
    EarthFinalV = sqrt((A) + 2*Acceleration*(B))

然后在while之后while True:循环（为什么不说SUVAT），用

替换3个语句

Earth.pos = Earth.pos + EarthFinalV

球体具有属性Earth.pos（向量）或Earth.pos.x（组件），但不具有Earth.x.pos。

无论如何，你的代码应该运行，但物理需要修正。

在Visual Python中模拟轨道时遇到问题

1 个答案: