Static friction between two surfaces

Prevents the relative motion between them

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Opposite to the direction of motion of them

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Acts in opposite direction of applied force

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Both (1) & (2)

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Solution

The correct option is B Acts in opposite direction of applied force
The frictional force is a force that opposes the motion of the two surfaces. If we apply any force to move the object in one direction then the frictional force comes into action. The frictional force is equal and opposite, the body moves only when we apply the force greater than the frictional force.
The frictional force between two surfaces is given as,
$F = μ_{s} N$

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If the force is applied in the direction opposite to the direction of motion, then it results in a decrease in the speed of the object in the same direction of motion.

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Which of these statements describe the properties of friction?
A. Friction helps to induce magnetism
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D. Friction produces heat energy.

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Statement 2: In practical situation friction force is always zero.

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