Question
In: Civil Engineering
How nature of friction and its magnitude varies based on surface characteristics? Also assume that you...
How nature of friction and its magnitude varies based
on surface characteristics? Also assume that you
are moving a rectangular block of weight 350 N in a rough
horizontal plane having a coefficient of friction
0.3. In what way you will find the magnitude of force which can
move the block while acting at an angle of
27 degree with horizontal?
Solutions
Expert Solution
When a body is pulled or pushed, friction force tries to resist the motion of the body. Friction is basically caused due to unevenness on the surface(on a microscale) on which the body is moved. If there is more unevenness present on the surface, then it tries to interlock with the undulations of the body and so we experience resistance while moving a body.
If there are less undulations on the surface on which the body is moved, then friction force is less(since interlocking potential is less) and viceversa. For eg. consider moving on ice block and on road. We experience more friction on road than ice since undulations compared to ice are more on road.
Hence the force to just move the block is 102.22N at an angle of 27degree.
Ally Wells answered 3 months agoRelated Solutions
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