Concept explainers
To explain: The similarity and differences between electric and gravitational forces.
Explanation of Solution
Introduction:
Electrostatic force of attraction or repulsion among the two electric charges is directly related to size of both the charges. The electrostatic force between the two charges
Where
Gravitational force is the attractive force between any two bodies because of the mass associated with them. It continuously tries to attract the bodies together and certainly not attempts to push them away from each other. Law of universal gravitation states that gravitational force
Where
Similarities between electric and gravitational forces are − both electric and gravitational forces are proportional to the inverse of the square of the separation among the two objects and are proportional to the product of masses or product of charges of two objects.
Differences between electric and gravitational forces are − Gravitational force is always attractive in nature because mass of an object is always positive.
Electric forces are either attractive or repulsive because charges are either positive or negative. Charges of opposite polarity attracts with one another and the charges of same polarity repulses one another.
Chapter 20 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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