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I learned in 6.1 that how when you change the surface the scale will change when you pull it at a steady pace I learned in 6.2 that how we change the friction force. I learned in 6.3 I show when we measure different surface area on the block and it can change of friction of force
How you measure friction is how when you pull it friction will pull against you and the number on the spring scale the never will get bigger untill it moved.
We all pull it 27cm and we don't change the surface so it won't mess up are stuff.
Article posted May 16, 2012 at 08:59 AM •
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