Another ball rolling down the ramp

[Puklain]

Another "ball rolling down the ramp"

i've looked through the physics forum without finding the problem solved.

Homework Statement

I want to compare theoretical and practical data, with a ball "rolling" down a ramp. the problem comes when i try to measure all the factors, so far the things i NEED to get in the equations:
Rolling resistance
Windforce / aoredynamics
I also think there should be something about "boyle-mariottes law"
basically get the theoretical as close to the practical as possible

Data
ball weight: 0.696kg
ball radius: 3 cm
ramp length: 207 cm
ramp height: 4 cm

The Attempt at a Solution

My idea was to compare acceleration by setting windforce to 0 (thats why the low height).
i got around 0.18 Newton in theory and 0.05 in practice(the force on the ball) .

therefore I am asking for some guidens, now what to do ? and how to do ?

i hope your understand my problem, because I am not the best at making others understand
and ofcourse looking forward to some help.
if you need some more data, please ask and ill try to get it as soon as possible (:

Regards Jesper.

 

[jbsteele]

To compare theoretical and practical data, you need to consider the following factors:1. Rolling resistance: This is the force that must be overcome by the ball in order to roll down the ramp. The rolling resistance is a function of the ball's mass, radius, and surface material (such as rubber or plastic).2. Wind force/Aerodynamics: If there is air movement, the ball will experience some drag due to the interaction between the air and the ball's surface. The magnitude of this force will depend on the ball's velocity, its surface area, and the density of the air.3. Boyle-Mariotte's Law: This law states that the pressure of a gas is directly proportional to its volume, so long as the temperature remains constant. This means that the higher the elevation of the ramp (or the air pressure), the lower the air pressure at the bottom of the ramp. This will affect the air resistance experienced by the ball.4. Initial speed: You need to measure the initial speed of the ball before it begins rolling down the ramp. This will depend on how hard you push it, and can be measured using a speed gun or other device.By measuring all of these factors, you should be able to get a good estimate of the theoretical and practical results.