- #1
VooDoo
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Hi Guys,
For a physics practical investigation I will be investigating the change in height (angle) of an inclined plane and the time taken to travel down the incline.
Now for my hypothesis and results I am a bit stuck. For the hypothesis I will be using the following formula.
x=ut+.5at^2
Where:
x=distance down the incline plane (meters)
u=Initial velocity (m/s)
t=time taken to travel down (seconds)
a=acceleration down the incline plane (m/s/s meters per second per second)
Now for our situation
x=1.58
u=0
t=?
a=gSinΦ (Φ varies with different heights)
So now I can build a relationship between the height (or the angle of inclination) and the time taken to travel.
Now I substitute values into the formula to get:
x=.5at^2 (because u=0)
Then transpose:
2x=at^2
t^2=(2x)/(gsinΦ)
Now we know that the values of 2x and g (g = 9.8 = acceleration due to gravity) remain constant (well we assume they do). How do I create a direct proportionality between t and Φ ?? So I get a straight line graph when I plot the two?
Have I gone about things the wrong way?
Edit - Here is a graph of the angle versus time
For a physics practical investigation I will be investigating the change in height (angle) of an inclined plane and the time taken to travel down the incline.
Now for my hypothesis and results I am a bit stuck. For the hypothesis I will be using the following formula.
x=ut+.5at^2
Where:
x=distance down the incline plane (meters)
u=Initial velocity (m/s)
t=time taken to travel down (seconds)
a=acceleration down the incline plane (m/s/s meters per second per second)
Now for our situation
x=1.58
u=0
t=?
a=gSinΦ (Φ varies with different heights)
So now I can build a relationship between the height (or the angle of inclination) and the time taken to travel.
Now I substitute values into the formula to get:
x=.5at^2 (because u=0)
Then transpose:
2x=at^2
t^2=(2x)/(gsinΦ)
Now we know that the values of 2x and g (g = 9.8 = acceleration due to gravity) remain constant (well we assume they do). How do I create a direct proportionality between t and Φ ?? So I get a straight line graph when I plot the two?
Have I gone about things the wrong way?
Edit - Here is a graph of the angle versus time
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