Why are positive forces considered repulsive and negative forces considered attractive?

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Can a positive force be attractive and repulsive?

If the particles are both positively or negatively charged, the force is repulsive; if they are of opposite charge, it is attractive. … Unlike the gravitational force however, the Coulomb (or electric) force may be either attractive or repulsive, depending on the signs of the charges and .

Is a positive force can be both attractive and repulsive in nature?

Regarding force (c)A positive force can be both attractive and repulsive in nature. Explanation: The force is repulsive if the particles are both positively or negatively charged; it is attractive if they are of opposite charge.

Is a negative force repulsive or attractive?

When the charges have opposite sign, the force is attractive (negative F), while if both charges have the same sign, the force is repulsive (positive F).

Is positive force attractive?

If both the interacting particles are positively or negatively charged, then the force is repulsive. If both the interacting particles are of opposite charges then the force is attractive in nature. Coulomb’s law describes this nature of electric charges.

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Why are attractive forces negative?

That’s all right,but I want to know whenever we use a work done by an attraction force we use a negative sign,viz: the gravitational potential.It is written in books that the gravitational potential is negative because the work to bring an object from infinity to the gravitational field is done by the gravitational …

Is positive force always repulsive?

If the product q1q2 is positive, the force between the two charges is repulsive; if the product is negative, the force between them is attractive.

Which of the following forces are both attractive and repulsive in nature?

Both gravitational and magnetic forces are attractive and repulsive in nature.

How do you know if a force is positive or negative?

Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.

Is negative force attractive in nature?

Like charges repel and unlike charges attract. Coulomb’s law describes a force of infinite range which obeys the inverse square law, and is of the same form as the gravity force. … A negative force implies an attractive force. The force is directed along the line joining the two charges.

Can electric force be attractive and repulsive?

Comparing Electrical and Gravitational Forces

Both equations show an inverse square relationship between force and separation distance. … Second, gravitational forces are only attractive; electrical forces can be either attractive or repulsive.

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