Select all of the following statements that are true about potential energy and conservative forces. Potential...
Select all of the following statements that are true about potential energy and conservative forces.
| Potential energy is the energy associated with the configuration of a system. |
| It is only possible to have potential energy if there are 2 or more objects in the system that interact with each other through internal, conservative forces. |
| Absolute values of potential energy have no meaning: only changes in the potential energy are physically meaningful. |
| There is only one kind of potential energy: gravitational potential energy. |
| Gravitational potential energy is always zero on the surface of the earth. |
| Gravity is a conservative force. |
Homework Answers
First, Second, Third and Sixth are the true statements for the potential energy and the conservative forces.
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Select all of the following statements that are true about
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Only A and B please :) The equation mgy for gravitational potential energy is valid only...
Only A and B please :)
The equation mgy for gravitational potential energy is valid only for objects near the surface of a planet. Consider two very large objects of mass m_1 and m_2, such as stars or planets, whose centers are separated by the large distance r. These two large objects exert gravitational forces on each other. The gravitational potential energy is U = -Gm_1 m_2/r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant. (a) Sketch...
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Only A and B please :)
The equation mgy for gravitational potential energy is valid only for objects near the surface of a planet. Consider two very large objects of mass m_1 and m_2, such as stars or planets, whose centers are separated by the large distance r. These two large objects exert gravitational forces on each other. The gravitational potential energy is U = -Gm_1 m_2/r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant. (a) Sketch...
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