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All the data you need is in the pictures. My professor told me to keep in mind y

ID: 1413368 • Letter: A

Question

All the data you need is in the pictures. My professor told me to keep in mind y=mx+b and mwg=(mc+mw)a +mc(g)(sin0) and y=(mc+mw)x and y= (m)(x) not sure what all that means but the slope is correct he said and I just need help with these 2 questions below:      

1. DETERMINE PERCENT ERROR BETWEEN THE OBTAINED SLOPE AND ITS EXPECTED VALUE.

2. INCLUDE A SAMPLE ERROR CALCULATION. WHAT ARE POSSIBLE SOURCES OF ERROR?

1. DETERMINE PERCENT ERROR BETWEEN THE OBTAINED SLOPE AND ITS EXPECTED VALUE.

2. INCLUDE A SAMPLE ERROR CALCULATION. WHAT ARE POSSIBLE SOURCES OF ERROR?

Explanation / Answer

1) PERCENT ERROR BETWEEN THE OBTAINED SLOPE AND ITS EXPECTED VALUE

= (5.199 - 4.991)/(5.199) * 100 %

=    4 %

2)    A SAMPLE ERROR CALCULATION

=   (0.3243 - 0.3189)/(0.3243) * 100 %

=    1.66 %

POSSIBLE SOURCES OF ERROR

1) Friction in pulley .

2) Friction in inclined plane .

3) Incorrect angle measurement .

4)    Viscous drag of air .