d Frictional Force *4 mat Tools Extensions Help Last edit was 8 minutes ago Times ... . - 12 + B I U A & C P D . = 1 . . E.E 1 . is the static coemicient of micuon larger for felt or wood? The static coefficient of friction is larger for wood. 2. How might we increase the static force of friction without changing the surface of the block? Give an example from everyday life of an application of a material chosen for its large coefficient of friction; for its small coefficient of friction. We can increase the static force of friction by adding something else to the surface that the block is sliding up/down. A real world example could be the material that door mats are made of or carpet. 3. In the measurement of the kinetic force of friction was the velocity of the friction block constant? If it were, what would this tell us? Is the kinetic coefficient of friction larger for felt or wood? Is it the same for the wide side as for the narrow, as we expected? How much did the value of the acceleration vary over five trials, as a percentage of the average magnitude (give a rough estimate)? How can we use this figure in our error analysis? The velocity wasn't constant and if it was it would mean the felt wasn't adding any friction. The coefficient for wood is larger. We modified the experiment to not include the wide versus narrow side. The acceleration decreased over the five trials 4. Was the coefficient of kinetic friction close to the same value for the "wide felt side down" trials when more weight was added to the mass hanger? Should it change? Express the percent deviation. Did the kinetic force of friction change? Was the coefficient of kinetic friction close to the same value when the angle of inclination was changed? Should it change? Express the percent deviation. Did the kinetic force of friction change? Not applicable, experiment was modified to not include testing of a wide versus narrow side. Therefore the question could not be answered. MacBook Air DII DD FO