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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In fact, the gravitational force (attractive) exerted by the Earth on the spaceship is given by
</span>
where G is the gravitational constant, M the Earth's mass, m the mass of the spaceship and d the distance of the spaceship from the Earth. As we can see from the formula, as the distance d between the spaceship and the Earth increases, the gravitational force F decreases, so answer D) is the correct one.
In fact, the gravitational force (attractive) exerted by the Earth on the spaceship is given by
</span>
where G is the gravitational constant, M the Earth's mass, m the mass of the spaceship and d the distance of the spaceship from the Earth. As we can see from the formula, as the distance d between the spaceship and the Earth increases, the gravitational force F decreases, so answer D) is the correct one.