Write a Python program to calculate drag force against a cyclist

Objective

Write a Python program to calculate drag force against a cyclist

Problem Statement

• Write a program to plot Velocity vs Drag force.(25 points)
• Write a program to plot Drag Co-efficient vs Drag force.(25 points)

Theory

Drag Force:A drag force is the resistance force caused by the motion of a body through a fluid, such as water or air. A drag force acts opposite to the direction of the oncoming flow velocity. This is the relative velocity between the body and the fluid.

Code

import math
import matplotlib.pyplot as plt 
import numpy as np

drag_coffs=np.linspace(0,2,25)


#frontal area(m^2)
A=0.1

#density(kg/m^3)
rho=1.2


velocities=[0,25]  
drag_force=[]     
drag_force_cd=[]  



for velocity in velocities:
	drag_force.append(0.5*drag_coffs*rho*A*velocity*velocity
	


print(drag_force)

plt.plot(velocities,drag_force)
plt.xlabel('velocity')
plt.ylabel('drag force')
plt.show()

Results

velocities vs drag_force plot

drag_coffs vs drag_force_cd plot