**GRAVITY FORCE**

**Gravity** is the force that makes bodies in space **attract** each other. Everything on Earth is attracted the the biggest and closest body near-by, Earth itself.

This attraction is what we talk about when we say Gravity Force but it also determines our weight and explains why a falling object goes faster faster as it reaches the ground, it’s just super attracted to it!

So, defining gravitational attraction helps us understand **weight force** and **acceleration**.

This simulator makes it possible to visually experience and understand the **gravitational force** that two objects exert on each other, given a **mass** and a **distance**.

The student is given the possibility to change the objects’ proprieties and visualize how changing them affects the gravitation attraction.

**LEARNING GOALS**

**Describe**how the distance and mass of objects affects the gravitational force;**Use**measurements to determine the universal gravitational constant;**Explain**Newton’s third law;**Think**of examples to derive the equation that relates mass, distance and gravity.

**LEARNING TIPS**

**Design**experiments to describe the relationship between mass and gravity;**Visualize**the relationship between mass and gravity;**Answer**the following question:

*“How does the gravitational force that a small mass has towards a large one compare to the force that a large mass has towards a small one? What physics law could you use to predict the answer?”*