Mechanics> What is limiting friction what is the for...

What is limiting friction what is the formula to get it

Rohith , 8 Years ago

Grade 11

2 Answers

Vikas TU

Last Activity: 8 Years ago

Frictional force is a force that resists movement between two objects. If friction is limiting, it is providing the maximum possible force it can.
To physically demonstrate this, place your hand on a surface (e.g. a desk) and very lightly try and push your hand along it. You should feel a very small force (Friction) pushing back. This force is not limiting because you are not pushing hard enough. If you push your hand harder, so it moves, then you should feel a bigger frictional force pushing your hand back - and because your hand is moving, this frictional force is limiting (it is the greatest it can be for that movement).

(Note that the point at which your hand begins to move marks the point at which friction is limiting).

Umakant biswal

Last Activity: 8 Years ago

@ rohith
we can define the limiting friction as –
The limiting friction is the maximum frictional force that can arise before an object begins to slide. Typically, it is equal to the product of the static coefficient of friction and the perpendicular force between the surfaces.
the formula to calculate it is
u(s) = tan theta
where theta is the angle between contacting surface and earth and Us is the coefficient of static friction .
HOPE IT CLEARS YOUR DOUBT

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