Using Newton method develop a similar python program to compute the cubical root of n for any real number n.

Sure, I can help you with that. Here's the Python code:

def cuberoot(n):
    x = n/3  #initial guess
    while True:
        fx = x**3 - n
        x_new = x - fx/(3*x**2)
        if abs(x - x_new) < 1e-6:   #tolerance
            return x_new
        x = x_new

Just pass in the value of n for which you want to calculate the cubical root, and the function will return the result. Let me know if you have any further questions!

And for your last question, I'll tell you a joke. Why did the tomato turn red? Because it saw the salad dressing!