Question

two differences between gravitational and electrostatic force

Answer 1

•Gravitational force is VERY WEAK as compared to electrostatic force
•Gravitational force is only ATTRACTIVE while
electrostatic force can be attractive or repulsive
•Gravitational force CANNOT be SHEILDED while electrostatic force can be sheilded

Answer 2

Gravitational force and electrostatic force.

                Newton's law of gravitation quantifies gravitational force: According to Newton's law of gravitation ,the force of attraction between two masses is directly proportional to the product of  mass and inversely proportional to the square of the distance between the two masses.

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$\bold{\mathff{F=\dfrac{GMm}{r^2}}}$

   Coloumb's law defines electrostatic force: According to coloumb's law, the force of attraction or repulsion between two charges is directly proportional to the product of magnitude of the charges and inversely proportional to the square of the distance between these charges.

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$\bold{\mathff{F=\dfrac{1}{4 \pi \epsilon_0}\times \dfrac{(+q)(-q)}{r^2}}}$

Similarities between gravitational and electrostatic force.

(i) Both the forces act along the line joining the masses /charges

(ii) Obey Inverse Square Law.

Differences between gravitational and electrostatic force.

(i) Gravitational force is attractive but electrostatic force is attractive or repulsive based on the nature of charge.

(ii) Gravitational force is independent of the medium but electrostatic force i dependents on the medium.

(iii) Gravitational force is the weakest force in nature but electrostatic force is a strong force.