Gravitational Forces

Front

The amount of attraction between two objects which are not in contact with each other is known as the _________.

Back

Gravitational force

Front

What is the proper setup of the gravitational force formula? Options:

F_g= Gm²/r

,

F=ma

,

F_g= Gr²/(m₁+m₂)

,

F_g= G (m₁m₂)/r²

Back

F_g= G (m₁m₂)/r²

Front

What effect does increasing the distance between two objects have on the gravitational force?

Back

It decreases

Front

When do gravitational forces exist between two objects?

Back

They are always present between any two objects.

Front

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog separated by 0.30 m.

Back

F_g = 7.2*10^-7 N

Front

What would the gravitational force be between the Sun and Mars if they were 2.3*10¹¹ m apart? The masses for the Sun and Jupiter are 1.99*10³⁰ kg and 6.42*10²³kg, respectively.

Back

F_g = 1.6*10²¹ N

Front

Which of the following changes would increase the gravitational force between two objects? Options: Increase G, Increase the mass, Increase r, Decrease G

Back

Increase the mass

Front

True or False: The gravitational force each tennis ball acts on the other is the same.

Back

True

Front

Where do we measure the r value for gravitational force between two objects?

Back

The center of their masses

Front

Why do we not feel a gravitational attraction to the objects around us?

Back

The masses are too small for the F_g value to be noticeable