Podcast
Questions and Answers
What type of forces are spring force, gravitational force, and Coulomb force?
What type of forces are spring force, gravitational force, and Coulomb force?
- Centripetal forces
- Frictional forces
- Conservative forces (correct)
- Non-conservative forces
What gets stored as potential energy when an external force does work in moving a body against a force like spring force or gravitational force?
What gets stored as potential energy when an external force does work in moving a body against a force like spring force or gravitational force?
- Kinetic energy of the body
- Work done by the external force
- Both kinetic and potential energies
- Potential energy of the body (correct)
What is the dependence of both gravitational force and Coulomb force on distance?
What is the dependence of both gravitational force and Coulomb force on distance?
- Linear dependence
- Inverse-square dependence (correct)
- Exponential dependence
- Inverse dependence
What can be defined for a charge in an electrostatic field analogous to the potential energy of a mass in a gravitational field?
What can be defined for a charge in an electrostatic field analogous to the potential energy of a mass in a gravitational field?
When can a test charge be brought from a point R to a point P against the repulsive force due to a charge Q?
When can a test charge be brought from a point R to a point P against the repulsive force due to a charge Q?
What is the electrostatic potential energy of a charge in an electrostatic field analogous to?
What is the electrostatic potential energy of a charge in an electrostatic field analogous to?
What kind of forces are spring force, gravitational force, and Coulomb force?
What kind of forces are spring force, gravitational force, and Coulomb force?
When does a test charge gain kinetic energy and lose potential energy?
When does a test charge gain kinetic energy and lose potential energy?
What is the dependence of both gravitational force and Coulomb force on distance?
What is the dependence of both gravitational force and Coulomb force on distance?
What happens to the sum of kinetic and potential energies for a body when the external force is removed?
What happens to the sum of kinetic and potential energies for a body when the external force is removed?
