# Rise and Run

1. Oct 29, 2004

### Padford

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I am in the process of planning my Coursework, I’m investigating rise and run; the time taken for a trolley to slide down a slope with varying distances from the end and with various inclinations, and I’ve hit a wall, a problem... :grumpy:

I'm looking for a formula that takes into account all of my variables:
Distance,
The inclination i.e. the angle,
Time,
Speed,
I have been given the mass of the trolley too, but it's not really a variable. When plotting the graph of the data, I’d like to have a constant that can be got from the gradient or the y- intercept, most likely the gradient thought.

2. Oct 29, 2004

### Integral

Staff Emeritus
Perhaps the reason you are not getting any responses, is because it if very difficult to understand what you are doing and what your question is. If you refomulate with a good description of your experiment and a specific question you will get better help.

I am moving this to the homework help fourm.

3. Oct 30, 2004

### Padford

You’re right, hope this explanation is better…
My experiment is simple in essence:
Its title is, “times for a trolley to roll down slopes of differing lengths and inclinations.” So basically I have a slope and I let a trolley slide down it from differing lengths and inclinations timing how long it takes to get to the bottom of the slope – I have done this with 6 different lengths and of 3 different inclinations, all quite small scale, e.g. having the rise at 0.154m and the run at 1.46m.

I have got my results, the experiments outline, the method etc, but alas, as yet I have no aim! Could you help me come up with an aim? I have thought about looking at the speed of the trolley sliding down the slope, but the maths is too simple; I have thought about acceleration, possibly analysing the initial velocity and final velocity, but I think they are all mathematically unchallenging. Does anyone know of a formula linking all my variables together? Or could point me in the right directon?

Thanks in advance

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