Calculating Putt Break Over Distance w/ Friction

[DylanB]

How would you go about calculating how much a putt would break over a given distance without neglecting friction?

EDIT: I've realized this would be more appropriate in the coursework section, unforunately it's too late now.

 

[AlphaNumeric]

You'd need the equation of the surface $$f(x,y)$$ along with the equation for friction in terms of velocity, like $$F = -kv^{2}$$. You'd compute $$\nabla f$$ which would give you the slope behaviour (so you can work out the force on the ball) and then it's just solving differential equations, including your initial conditions (where the ball starts and it's initial velocity).

For a real life green this isn't practical since you don't know f(x,y).

 

[sir-pinski]

To calculate the break of a putt over a given distance, you would need to consider several factors, including the slope of the green, the speed of the green, and the friction of the grass. Here are the steps you can follow to calculate the putt break without neglecting friction:

1. Determine the slope of the green: The first step is to assess the slope of the green where you will be putting. You can do this by standing behind the ball and looking at the green from different angles. Note the direction and degree of the slope.

2. Determine the speed of the green: The speed of the green can greatly affect the break of your putt. Faster greens tend to have more break, while slower greens have less. You can estimate the speed by rolling a few balls from different locations on the green and observing how far they roll.

3. Measure the distance of the putt: Using a measuring tape or rangefinder, determine the distance between your ball and the hole.

4. Use the AimPoint Express system: AimPoint Express is a popular method used by professional golfers to calculate the break of a putt. It takes into account the slope, speed, and distance of the putt to determine the break. You can learn more about this system through online tutorials or by attending an AimPoint clinic.

5. Consider the friction of the grass: Friction plays a crucial role in the break of a putt. The type and condition of the grass on the green can greatly affect the amount of break. For example, faster greens with shorter grass will have less friction and therefore less break. On the other hand, slower greens with longer grass will have more friction and more break. You can adjust your calculations based on the type of grass and its condition.

6. Practice and adjust: The best way to get a feel for how much a putt will break over a given distance is to practice. Observe how your putts break on different greens and take note of the factors that affect the break. With enough practice, you will develop a better understanding of how to adjust your calculations based on the conditions of the green.

In conclusion, to calculate the break of a putt without neglecting friction, you need to consider the slope, speed, and distance of the putt, as well as the type and condition of the grass. By using a system like AimPoint Express and practicing on different greens, you can improve your ability to accurately predict the break of a putt and make more successful