Lesson 1426 of 1524
Gravitation
The weight of an object is the gravitational attraction between Earth and the object
Practice this chapterThe weight of an object is the gravitational attraction between Earth and the object The gravitational field is represented as lines that indicate the direction of the gravitational force; the line spacing indicates the strength of the field
Apparent weight differs from actual weight due to the acceleration of the object The total energy of a system is the sum of kinetic and gravitational potential energy, and this total energy is conserved in orbital motion
gravitational field — vector field that surrounds the mass creating the field; the field is represented by field lines, in which the direction of the field is tangent to the lines, and the magnitude…. total energy of a system — the sum of kinetic and gravitational potential energy, and this total energy is conserved in orbital motion. apparent weight — reading of the weight of an object on a scale that does not account for acceleration. weight of an object — the gravitational attraction between Earth and the object.
Worked example
What does “gravitational field” mean in Gravitation?
- 1Use the wording this chapter gives for gravitational field.
- 2The book says: vector field that surrounds the mass creating the field; the field is represented by field lines, in which the direction of the field is tangent to the lines, and the magnitude….
- 3Do not use the meaning of total energy of a system. That term means the sum of kinetic and gravitational potential energy, and this total energy is conserved in orbital motion.
Result: vector field that surrounds the mass creating the field; the field is represented by field lines, in which the direction of the field is tangent to the lines, and the magnitude…
Why. That is the meaning this chapter gives for gravitational field.
Do not swap gravitational field and total energy of a system. gravitational field means vector field that surrounds the mass creating the field; the field is represented by field lines, in which the direction of the field is tangent to the lines, and the magnitude…. total energy of a system means the sum of kinetic and gravitational potential energy, and this total energy is conserved in orbital motion.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.