**Parallel
Forces on an Incline
** Determine
the relationship between angle of inclination and the
force needed to keep cart from rolling.

Objective:

1. Sketch the set up with the board at 45

2. Review Pg 124 and note the

Label all the vector components on your sketch.

3. Set the incline at angles between 0

4. Find the mass of the cart and calculate its weight (g = 9.8 m/s

**Analysis**

1. Plot a graph of
the parallel force (y-axis) as a function of angle **θ**.
Connect the data points with a *smooth curved line*.

2.
Now, plot *on the same graph* the product of**
(weight of cart) x
(sin θ**) at each angle** θ.
**

3. From the graph,

4. Using the graph, estimate by interpolation the approximate

Find the sine of this angle and draw a conclusion.

5. Summary

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