limiting friction

Answer: The force that was applied was exactly the right amount to overcome static friction, so it is equal to Fsmax. On a flat surface, the normal force on an object is η = mg. The coefficient of static friction can be found by rearranging the formula for the maximum force of static friction: μs = 0.6020…

The formula to calculate the static friction is given as: Static Friction = Normal Force x Static Friction coefficient. Static friction = 60 N.

To find the minimum coefficient of static friction between two materials, construct an incline plane from one of the materials and place a body made from the other material on it. Increase the angle of the incline until the body starts to slide. The tangent of the angle is the coefficient of friction.

An easy way to measure the coefficient of static friction is to place two objects together and then tilt them until the top one slides. The angle at which one object starts to slip on the other is directly related to the coefficient. When the two objects are horizontal there is no frictional force.

The formula to calculate the coefficient of friction is μ = f÷N. The friction force, f, always acts in the opposite direction of the intended or actual motion, but only parallel to the surface.

MY ANSWER

1. MY ANSWER.
2. maximum value of static friction between m2 and m3 =15 N.
3. considering the surface between m2 and m3.
4. considering the upper surface m2 and lower surface of m1.
5. acceleration of m1 = force/2 = (maximum value of static friction)/2 = 4/2 = 2 m/s^2.

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Force

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