If the normal force exerted on an object increases, the coefficient of sliding friction will also increase. True False
2 answers:
Answer:
FALSE
Explanation:
As we know that the friction force between two sliding surfaces is given by the formula
here
= coefficient of friction
it depends on the the inter molecular force between the molecules of the two surfaces which slide over each other
now if we will increase the normal force then it will increase the force of friction
but if will not change the value of coefficient of friction between two surface as it is property of the surface only
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<h2>5.3 km</h2>
Explanation:
This question involves continuous displacement in various directions. When it becomes difficult to imagine, vector analysis becomes handy.
Let us denote each of the individual displacements by a vector. Consider the unit vectors as the unit vectors in the direction of East and North respectively.
By simple calculations, we can derive the unit vectors in the directions North,
South of West and
North of West respectively.
So Total displacement vector = Sum of individual displacement vectors.
Displacement vector =
Magnitude of Displacement =
∴ Total displacement =