I am doing a lab report for a lab I did in class. The lab is about sliding a mass (in this case a book) down an inclined plane. I collected the data and calculated the acceleration for the mass if it fall at 90 degrees. I have to do an analysis but I having some trouble answering these questions.(adsbygoogle = window.adsbygoogle || []).push({});

1. When I found the acceleration for the mass when it slides down at a 90 degree angle to be 16.9 m/s^{2}. The acceleration of gravity of is 9.8 m/s^{2}. So why isn't this the value of 9.8 m/s^{2}? Is it because 16.9 m/s^{2}is the weight?

2. How do I find net force on a mass on an inclined plane? I'm pretty sure I have to use Newton's 2nd Law equation: F = ma. But do I use 9.8 m/s^{2}or 16.9 m/s^{2}for a?

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# Homework Help: Newton's 3 Laws Lab

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