PASCO ME-6955 1.2 m PAScar Dynamics System - Manual (Page 24)

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1 . 2 m P A S c a r D y n a m i c s S y s t e m E x p e r i m e n t 8 : A c c e l e r a t i o n D o w n a n I n c l i n e
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4. Measure the hypotenuse of the triangle formed by the track and use this to calcu-
late sin
 for each angle.
Hypotenuse = __________
5. Plot acceleration versus sin
. Draw the best-fit straight line and calculate its
slope. Calculate the percent difference between the slope and g = 9.8 m/s
2
.
slope = ______________________
% difference = _______________
Questions
1. Does your reaction time in operating the stopwatch cause a greater percentage
error at higher or lower track angles?
2. How will doubling the mass of the cart affect the results? Try it.