7.2.1-2 Newton's Law and Gravitational Field Strength

9 flashcards · Physics · by TheoTyson

1. Which objects have gravitational fields?

   All objects with matter have a gravitational field.

2. When does an object with mass experience an attractive force?

   When placed in the gravitational field of another object.

3. Is a gravitational field linear or radial?

   Radial field.

4. What does Earth's gravitational field look like?

5. What does Earth's gravitational field look like near the surface?

6. Is the gravitational force attractive or repulsive?

   Always attractive.

7. In the equation F=Gm1m2rF = \frac{Gm_1m_2}{r}F=rGm1​m2​​ , what is rrr ?

   The distance between the two centres of mass.

8. What is gravitational field strength?

   Force per unit mass.

9. What is the gravitational field strength - radius\text{gravitational field strength - radius}gravitational field strength - radius graph?