- #1

dmarionk

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## Homework Statement

I am currently enrolled in a Engineering Drafting class. We are working on a group project where we are making a putting machine. We decided on a spring powered device. The ramp's measurements look like this where the goal is to get it into the hole at the end of the ramp.

http://i.imgur.com/o4q0D9X.jpg Its a golf ball rolling on astroturf. Heres the information he gave me when I told him I don't understand fully. http://i.imgur.com/dDhOKrO.jpg

And this is the information when he first explained it. http://i.imgur.com/A9zEuJu.jpg

From my understanding. The Professor wants the amount of force required to hit the ball into the hole. And also how much force the spring is hitting the ball with. I've only dipped my toes into the great ocean of physics and I'm still in pre-calc. This all seems very complicated to me and I have a feeling it's not that hard. Thanks in advance for your help.

Sorry for not embedding the pictures. When I did they were too big.

## Homework Equations

This is for calculating the coefficient of friction.

MgH - [itex]M[/itex] /distance = 0

Mg = Mass of golfball = .099lb

H = Height = .038ft

[itex]M[/itex] = coefficient of friction

Distance = 1.65ft (average of 6 tries)

18.4375, 19, 19.3125, 20, 20.0625, 20.4375, 21.3125

## The Attempt at a Solution

(.099 * .038) - ([itex]M[/itex]/1.65) = 0

.003762 - [itex]M[/itex]/1.65 = 0

-[itex]M[/itex]/1.65 = -.003762

[itex]M[/itex]/1.65 = .003762

[itex]M[/itex] = .00621

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