Forces and friction investigation lab: coefficients of static and kinetic friction michael mohamed sph4u0-c march 20th, 2009 introduction: in the study of newtonian physics is it is useful to consider almost all objects which are not within a vacuum to be subject to the force of friction in this usage ‘friction’ refers to the. Full investigation into the effect of mass and surface on the friction between two objects. How surface area affects the force of friction related book physics i for dummies, 2nd edition by steven holzner the force of friction comes from the surface. In this investigation different types of road surfaces were tested the results show that larger tread contact resulted in higher coefficients of static friction the. Crystallographic controls on the frictional behavior of dry and water-saturated sheet structure minerals diane e moore and david a lockner u s geological survey, menlo park, california, usa. Coefficient of static friction introduction static friction is the force responsible for holding an object in place in order for an object to move, the applied.
An investigation of frictional and collisional powder flows using a unified constitutive equation. Investigation of the relation between surface roughness and friction properties of polyester fabrics after abrasion mine akgun, behcet becerir and halil rifat alpay. Physics 151 – notes for online lecture #12 friction: the basic facts of macroscopic (everyday) friction are: 1) frictional forces depend on the two materials that are sliding past each other a box sliding over a waxed floor experiences less friction than a box sliding over an unwaxed floor. An investigation of the factors which influence the frictional properties of textile fibers a thesis presented to the faculty of the graduate division. While different people have different reactions to noise, it is important to design refrigerators that do not generate any noise to ensure that all consumers are.
Students can carry out investigations on whether object of different masses would affect the frictional force study the relationship between contact area and. Experiment 6 the coefficient of friction speed you should have to tap the block in order to get it started use µ k = tan add a total of 1000g to block and repeat. Difference between static and kinetic friction – the graph shows how the frictional force between two surfaces changes as the pulling force is increased. The measurements of static and dynamic frictional forces by the researchers under the influence of external vibrations indicate three different or opposite trends and.
Static and kinetic friction friction is a key concept when you are attempting to understand car accidents the force of friction is a force that resists motion when two objects are in contact. The effect of weight on sliding friction between a block and surface planning ===== in this investigation we are going to find out what effect weight has on sliding friction friction is the force that is between two objects that are in contact with each other the force is always present even though people only think it is there when the object is.
Frictional study of the soft and hard solid interface using response surface methodology open access. Westminster college sim mech 3comp-2 static and kinetic friction 5 sketch a graph of force vs time for the force you felt on your handlabel the portion of the graph corresponding to the block at rest, the time when the block just. Journal of engineered fibers and fabrics 99 volume 7, issue 2 – 2012 frictional behavior of plain woven fabrics constructed from polyester and cotton yarns in different. The static frictional force is a little different from the kinetic frictional force for one, the static frictional force will change its value based on how much.
Investigation into friction static friction is when the two surfaces are not sliding over one another, but are stationary the coefficient of static friction is higher than that of dynamic friction, because once the force of friction is overcome, which takes quite a lot of effort, comparatively little force is needed to keep the surface in motion, and overcome the. Static friction there is an amount of force required to keep the object moving this force is called sliding friction or dynamic friction purpose identify and. Static coefficient of friction measurement using tribometer 00 05 10 15 20 000 005 010 015 020 coefficient of friction time(min) static.
Find out about friction compare two different surfaces and work out how many times greater the friction is on one surface compared to the other investigate some floor coverings and find out how safe they are devise your own friction investigations task 1 what is friction study these pictures and discuss what is happening use the words. The investigation of frictional coefficient for different cotton varieties shahram nowrouzieh1, jean-yves drean2 (static friction tester) these slivers were. Practical worksheet for investigating the effect of different surfaces on frictional forces. The two main types of friction are static friction and kinetic friction and they occur in different situations, based on whether or not there is relative motion between two objects scenario 1: a block resting stationary on a rough, flat, horizont.